phpcron

 This is the scheduling engine and command line utility. 
 It can be controlled by phpcron_admin.php

David C. Druffner
 ddruff@gemini1consulting.com

 COPYRIGHT 2001 (C) David C. Druffner
 ddruff@gemini1consulting.com
 This script is released under a modified BSD License.
 See php phpcron.php -license and LICENSE.txt in download package 
 for full license details

October 25, 2001

 October 25, 2001 - first beta release, version 0.5b.

Can't startup phpcron or execute most system calls in Windows, 
 although stop and other functions work
 Other Bugs can be reported via the online manual:
 http://www.gemini1consulting.com/tekhelp/online_manuals/phpcron/

This script can be controlled by Phpcron Admin (phpcron_admin.php), 
 a based interface.
 
 The current manual for Phpcron and Phpcron Admin is located at 
 http://www.gemini1consulting.com/tekhelp/online_manuals/phpcron/
 The Home Page is:
 http://phpcron.sourceforge.net/
 Download from the Source Forge Project Page:
 http://www.sourceforge.net/projects/phpcron/

 In-Line Documentation:
 A slightly modified version of ROBODOC is used to
 generate documentation for   this code. I have modified the headers.c file in
 the Robodoc source code to  et  the variable header_markers to equal only
 /*ROBODOC* as the start of a  header  marker - this avoids confusion with other
 strings and comments in PHP  code.   Robodoc is available at
 http://www.xs4all.nl/~rfsber/Robo/robodoc.html

CURRENT_DIRECTORY

 Constant which holds the path of the current directory.

phpcron_directory - path that holds include files

 This is the directory  that holds the include files.  Must be able to be
 written to by process  running this script. By default this is null thus
 pointing to the same  directory as this script .

$start_time - formatted string hold time script started

 String containing time script started.

$phpcrontab_filename - name of phpcrontab.conf file

 String - Name of phpcrontab.conf file.

$debug - controls debug messages

 Boolean - true to see debug messages

$slow_debug_scroll - controlls scroll of debug messages

 Int - increase to slow scroll of debug messages

$log_result - controls logging

 Boolean - true to log of execution of commands in phpcrontab.conf

$log_result_files - path to log file

 String - path to log file

For Dos, use forward slash only, not double escape

$mail_success - controls email notificatio

 Boolean - set to true to mail user a notification that 
 commands in phpcrontab.conf has been executed successfully

$admin_email_address - address to email phpcron messages to

 String - contains email address of administrator

$mail_errors - controls mailing of error messages

 Boolean - set to true to mail the user an error message
 regarding the failure of a scheduled phpcron command.

This does not work for Windows/Dos 

$error_email_address- email address to send error messages to

 String - address receiving mail sent if $mail_errors 
 set to true to mail the user an error message

$system_name- unique name of system which phpcron.php is running

 String - Unique name of system on which the phpscript is used. You can name
 it whatever you want, but I suggest the host name - Used to identify system in 
 email messages

$suppress_output- true to suppress all but non-fatal error messages

 Boolean - Suppress all non-fatal error messages and other output (including
debugging messages). This overides $debug

$daemon_mode- set to true to run as a daemon

 Boolean - when this is set to true, phpcron.php runs in a 
 continuously as a daemon.

stopThisProcess

 boolean stopThisProcess(string $stop_message)

 Gracefully stops this script. Time stamps the log file,
 deletes phpcron_psinfo file and exits.

 string $stop_message - Message to be output to 
 screen

    function stopThisProcess($stop_message) {
    //Graceful Stop
    
    global $log_result;
    global $log_result_file;
    global $pid;
    global $phpcron_off;
    global $phpcron_psinfo_file;
    global $daemon_mode;
    /* Only do this if this process is running as a daemon.
    Don't want to log start/stops if only running once */
    sendOutput($stop_message."\r\n", true);
    
    if($daemon_mode) {
    
      $stop_time= date("m/d/Y").":".date("h:i:s:A");
    
      if ($log_result) {
      $stop_message="
    ***********************************************************
    PHPCRON (DAEMON) $pid Stopped $stop_time
    
    Final Output Message:
    ".strip_tags($stop_message)."
    ***********************************************************
    ";
    
      appendToFile("$stop_message", $log_result_file);
      }
    
      deleteFile($phpcron_off);
    
    }
    
    deleteFile($phpcron_psinfo_file);
    deleteFile("$TEMP_DIR/".basename($phpcron_psinfo_file));
    
    
    
    exit;
    
    }    

killOtherPhpcron

 boolean killOtherPhpcron(void)

 Kills any other phpcron daemons that may be running.
 This is a non-nice termination and is only used
 when stopOtherPhpcron doesn't work. It actually
 kills the process and does not properly 
 timestamp logs, etc.

See stopOtherPhpcron

 Returns true on success, false on failure.

Probably lots due to not testing on any other system.
 Ps command may be different for other systems. 
 Kill process won't work on Windows systems.

    function killOtherPhpcron() {
    
            /* Abort Phpcron daemons - not nice*/
            //First try to stop nicely
            if(stopOtherPhpcron()){
            
            return true;
            }
            
          
            exec("ps -C php O p |grep 'phpcron.php.(*['--daemon'|'-D'].*'$|cut -d' ' -f1-4",$output,$result_code);
    
            $i=0;
            //loop through processes and kill them
            while($i<=count($output[$i])-1) { //-1 is don't kill this process
            //Get rid of any spaces and make sure only have one element
            $output[$i]=trim($output[$i]);
            $output_array=explode(" ", $output[$i]);
            $output[$i]=$output_array[0];
    
            //sendOutput("Output: Killing Phpcron daemon process $output[$i]\r\n");
            
            exec("kill -9 $output[$i]",$killoutput, $result_code);
            if ($result_code) {
            //sendOutput("Error: Can't Kill process $output[$i]\r\n");
            return false;
            }
    
            $i++;
            }
    
            return !isotherPhpcrond();
    
    }    

$cl_help - command line help string

 String - holds command line help

    $cl_help="
    --abort
    -a
    
            -Aborts a currently running phpcron daemon - Not Nice. Only use if 
            --quit fails
            
    --phpcrontab PHPCRONTAB_CONF_FILE
    -c PHPCRONTAB_CONF_FILE
    
             -Sets the path for configuration file named as PHPCRONTAB_CONF_FILE
             
    --daemon
    -D
            -Daemon Mode - Run until process is killed
            
    --daemon-off
    -d      
    
            -Daemon Off/Run Once - Parse the phpcrontab file once and stop 
            (original default)
            
    
    --email-errors EMAIL_ADDRESS
    -E EMAIL_ADDRESS
    
            Email Errors on - Email failure message if scheduled program fails to
            execute
            
    --email-errors-off
    -e      
            -Mail Errors Stop - Turn off email of errors (original default)
            
    --help
    -h 
    -? 
    
            -Prints this help
            
    --logging LOGFILE
    -L LOGFILE
    
            -Turn logging on and set the path to the log file
            
    --logging-off
    -l      
            -Stops logging (original default)
            
    --mail-notification EMAIL_ADDRESS
    -M EMAIL_ADDRESS
            
            -Turn the mail notification feature on 
            
    --mail-notification-off
    -m
            - Turn the mail notification feature off (original default)
            
            
    --name SYSTEM_NAME
    -n
            -Set the system same used in mail messages
    
    
    -r [DUMP_FILE]
    
            - Redirect All Output to DUMP_FILE (default file: phpcron_output)
            
    --suppress
    -S
            -Suppress all messages to screen except fatal errors
    
    --suppress-off
    -s
            -Stop Suppression of output (original default, opposite of -S)
            
    --slow-debug SECONDS
    -sd SECONDS
    
            -Slow Debug Scroll - SECONDS is integer by which debug messages are 
            slowed. Increase to slow debug messages when verbosity is turned on
    
    --quit
    -q
            -Stops gracefully all currently running phpcron deamons
    
    --verbose
    -v
    
            -Turn debugging messages on
            
    --verbose-off
    
            -Turn debugging messsages off (original default)
            
            
    NOTE: The actual defaults may be different from the \"original default\" setting
    if the user configuration options have been changed in the script or if a user
    configuration file is being used.
    For more information, see the manual that is packaged with the script.
    
    ";    

$redirect_output - if true, directs output to specified file

 Redirects all output to specified file

phpcron_admin

David C. Druffner
 ddruff@gemini1consulting.com

 This is the browser based interface to phpcron.php.

 COPYRIGHT 2001 (C) David C. Druffner
 ddruff@gemini1consulting.com
 This script is released under a modified BSD License.
 See php phpcron.php -license and LICENSE.txt in download package 
 for full license details

Can't startup phpcron or execute most system calls in Windows, 
 although stop and other functions work
 Other Bugs can be reported via the online manual:
 http://www.gemini1consulting.com/tekhelp/online_manuals/phpcron/

This is the browser based interface to phpcron.php.

 The current manual for Phpcron and Phpcron Admin is located at 
 http://www.gemini1consulting.com/tekhelp/online_manuals/phpcron/
 The Home Page is:
 http://phpcron.sourceforge.net/
 Download from the Source Forge Project Page:
 http://www.sourceforge.net/projects/phpcron/

 In-Line Documentation:
 A slightly modified version of ROBODOC is used to
 generate documentation for   this code. I have modified the headers.c file in
 the Robodoc source code to  et  the variable header_markers to equal only
 /*ROBODOC* as the start of a  header  marker - this avoids confusion with other
 strings and comments in PHP  code.   Robodoc is available at
 http://www.xs4all.nl/~rfsber/Robo/robodoc.html

CURRENT_DIRECTORY - constant giving path for current directory

 Constant containing path for directory of script being executed.  This is
 mainly used to expand directories when paths are sent to the screen and the
 a path  otherwise would have no directory name since it is in the current
 directory. See formatPath
 
  

$phpcron_directory - path to directory holding phpcron.php  

 This is the only variable you need to set after  installing.   Its value is the
 directory in which you put phpcron.php and all supporting  scripts  (other than
 this script, phpcron_admin.php) in the  installation  package,  including
 phpcron_commonlib.php,phpcron_userconfig.php,  and   phpcrontab.conf.

$phpcron_output - name and path of output file

 This is the file which all output is redirected when the
 -r flag is used. See $cl_help

$secure - set to implement some security features

 Make this true to turn on some security features. The
 only thing this does now is turn off the "save as"
 text box on the edit screens

$user_config_file - contains path and filename of user configuration
 file

$left_mlc_ch - contains beginning characters marking beginning of multiline
                comment 

$right_mlc_ch - contains end characters of multiline comment for userconfig parse
 

$sc_ch - contains start characters for single line comments, used in userconfig parse
 

$uc_contents - contents of $user_config_file

See cpPhpcron, parseUserConfig, rebuildUserCfg

$uc_contents_length - length of $uc_contents

$admin_subpage - main url variable which determines which page to display

clearLogFile - clears the log file

 boolean  clearLogFile(string $log_result_file);

 $log_result_file   - file which phpcron.php logs all execution results to

 Deletes the log file and stamps it with the time
 that it was cleared.

 Returns true if cleared, false if was not able to be cleared.

    function clearLogFile($log_result_file) {
    /* Clears Log file, returns false on success, true and error messages on failure */
    
    $clear_time= date("m/d/Y").":".date("h:i:s:A");
    if(!deleteFile($log_result_file)) {
    $error_messages="Cannot delete $log_result_file - Check path and permissions.<br>";
    } else {
    
    $clear_message="
    ***********************************************************
    PHPCRON Log File Cleared on $clear_time
    
    ***********************************************************
    ";
    
    //append to log file and  get error messages, not success message
    $append_results=appendToFile($clear_message,$log_result_file);
    $append_results[0]="";
    if(trim($append_results)) {
    $error_messages.=implode(" ",$append_results);
    }
    
    
    }
    return $error_messages; //if there are errors, this will return true, if not, false
    
    }    

isBadPhp - checks to see if there are any parse errors in a PHP file

 mixed  isBadPhp(string $file_contents, string $file_name)

 This functions checks $file_contents to see if it has any PHP errors in it 
 (syntax or otherwise) and returns those errors. It does so by saving a
 temporary  file with file_contents  to the web server document root directory
 and then   opening a url to it. 
 
 This should only be used on files that don't have any output - since it
 assumes  that any  output is an error (i.e., mainly intended to check if the
 syntax of  the included  user configuration file is ok.)

 $file_contents - contains contents of $file_name file to be checked for errors
 
 $file_name     - contains full path of an existing file, the contents of which
 are $file_contents
 

 The primary purpose of this function is to make sure that the user 
 configuration file does not have an error in it before it is saved  if it is
 being edited through phpcron_admin. This could happen  if the user mistakenly
 enters erroneous statements - especially  in the free style edit mode. Since
 the userconfiguration file  is included both in phpcron_admin.php and
 phpcron.php  this could have disasterous results unless syntax errors, etc. 
 are anticipated.
 

 It returns the PHP error messages, if none, returns false.  
 

 This requires the web server to have read/write permissions to the
 web server's root document directory.
 

    function isBadPHP($file_contents, $file_name) {
    
    
    global $DOCUMENT_ROOT;
    global $SERVER_NAME;
    global $phpcron_directory;
    
    
    $file_name=$DOCUMENT_ROOT."/".basename($file_name).".tmp.php"; //add temporary extension
    $save_results=saveFile(trim($file_contents), $file_name);
    
    if(!$save_results[0]) { //if not a successful save
    $save_results=implode("",$save_results);
    $error_messages.="Save results: $save_results";
    
    
    $index=2;
     /* $error_messages.="
      Error: Cannot save $file_name, verify permissions allow writing to file.<br>
      Error: Cannot save temporary file - verify permissions allow writing to ".formatPath($phpcron_directory)."<br>";
      */
      while(isset($save_results[$index])) {
      $error_messages.=$save_results[$index];
      $index++;
      }
    
      return $error_messages;
    }
    
    $handle = fopen ("http://$SERVER_NAME/".basename($file_name), "r");
    
    while (!feof($handle)) {
    $contents.=fread($handle,4096);
    
    }
    
    fclose($handle);
    $contents=trim(strip_tags($contents));
    //get rid of reference to temporary file name
    $contents=str_replace ("in ".formatPath($file_name),"", $contents);
    deleteFile($file_name);
    
    /*If the output from the open has any characters in it at
       all we are assuming there are errors*/
    
    if ($contents) {
      return "The following PHP errors are in your file<br>\r\n".$contents;
    } else {
      return false;
    }
    
    
    
    } //end of function    

isTabFormBad - validates phpcrontab.conf created by editTabByForm function

 boolean isTabFormBad (array $ct_param, array $commands)

 This functions checks $ct_param and $commands which are generated by
 editTabByForm  they conform with proper crontab format. 

 $ct_params - 2 dimensional array which contains scheduling parameters for 
              phpcrontab.conf.
 
 $commands   - array which contains scheduled phpcrontab commands. 

 It returns true if there is a validation error, false if the phpcrontab
 contents are valid.

See editTabByForm.

    function isTabFormBad($ct_param, $commands) {
    /* Validate parameters in Chron Tab Form Submitted from Structured Edit */
    
    $command_number=0;
    
              /* Cycle through each parameter */
                 while (list($first, $second) = each($ct_param)) {
                  $command_number++;
                  while (list($each_second) = each($second)) {
    
                          $test_value=trim($ct_param[$first][$each_second]);
                         $commands[$first]=trim($commands[$first]);
    
                         /* If it's an asterisk than it's ok - continue to next value */
    
                         if ($test_value =="*") {
                           continue;
                         }
                  }
    
    
                         /* If either there are any parameters for this line or
                         there are commands for this line than validate each parameter
                         for correct format */
    
                         //test if either a time parameter or commands are entered
                         $test_whole_string=trim(implode(" ",$ct_param[$first]));
                         
                         if ($test_whole_string or $commands[$first]) {
    
                         $error_messages.=isCronTimeParamsBad($test_whole_string, $command_number);
                         }
                          
        
                       
                       
                }
                
                /* If there are time parameters and no commands than give error */
                if (trim(implode("",$ct_param[$first])) and !$commands[$first])  {
      
                $error_messages.="Error in Command #$command_number: The commands field is empty<br>";
      
                }
    
              
              if ($error_messages) {
                return "<h3>Cannot save because of validation errors - please fix and try again:</h3>
                      $error_messages";
              } else {
                return false;
              }
    
    }

menuBar

 string menuBar(void)

 Contains the HTML for the main navigational menu bar

 Returns a formatted string containing HTML for the menu bar.

    function menuBar() {
    global $PHP_SELF;
    
    
      //Print Horizontal Menu Bar
    $output="
      <!--**********Begin Menu Bar**************-->
      <table border=\"0\" cellspacing=\"0\" cellpadding=\"1\" align=\"center\" width=\"800px\" class=\"menuBar\" bgcolor=\"#9999CC\" summary=\"Menu Bar\">
      <tr>
        <td align=\"center\" width=\"25%\">
          <a href=\"$PHP_SELF?admin_subpage=Control_Panel\" title=\"Turn ON/OFF, Set Options\">Control Panel</a>
        </td>
        <td>
        |
        </td>
        <td align=\"center\" width=\"25%\">
          <a href=\"$PHP_SELF?admin_subpage=Edit_UC_Full\" title=\"Directly Edit Options\">Set Options (Advanced)</a>
        </td>
        <td>
        |
        </td>
        <td align=\"center\" width=\"25%\">
          <a href=\"$PHP_SELF"."?admin_subpage=Edit_Tab_By_Form\" title=\"Form Edit of Phpcrontab\">Edit Schedule (Basic)</a>
        </td>
        <td>
        |
        </td>
        <td align=\"center\" width=\"25%\">
          <a href=\"$PHP_SELF?admin_subpage=Edit_Tab_Full\" title=\"Directly Edit Phpcrontab\">Edit Schedule (Advanced)<br></a>
        </td>
      </tr>
      
      </table>
      <!--**********End Menu Bar**************-->
      ";
    
    return $output;
        
    
    }    
    

pageTitle

 string pageTitle(string $title)

 Completes the header for the HTML page inserting the page title, ending title
 and head ta and creating the opening body tag

 $title - string containing the title of the HTML page

 Returns a formatted string containing HTML for the end of the <head> and 
  beginning of the body tag

    function pageTitle($title) {
      return "
      $title
      </title>
      </head>
      <body>
      
    <!--Begin Note for Non Compliant Browsers |*-->
    
          <p class=\"ahem\" > 
        <font size=2px> 
        <strong> 
        <em>
              For a better viewing experience, either turn your CSS stylesheets
            on in your browser, or if your browser does not support stylesheets, 
          <a href=\"http://www.webstandards.org/upgrade/\"
            title=\"Download a browser that complies with Web standards.\">download </a> a
            browser that complies with web standards. Some browsers disable stylesheets when
            JavaScript is disabled. 
        </em>
        </strong>    
        </font>
          </p>
    
          <NOSCRIPT>
              <p class=type1>  <font size=2px> <strong> <em> Either you have JavaScript
           turned off in your browser or your browser does not
               support JavaScript. Although this site supports non-JavaScript browsers,
               for better functionality you may want to <a href=\"http://www.webstandards.org/upgrade/\"
              title=\"Download a browser that complies with Web standards.\">download </a>
           a JavaScript enabled browser.
              </em> 
           </strong>
           </font>
              </p><br/>
           </NOSCRIPT>
    
    <!--End Note for Non Compliant Browsers *|-->
        ";
    }    

buildNewtab

 string buildNewtab(int $max_line_number, string $phpcrontab_filename, array
 $ct_param, array $commands, array $side_line_comments);
 

 Takes information from editTabByForm and creates new file contents to be 
 saved over phpcrontab.conf

 int $max_line_number           - max number of lines in file
 string $phpcrontab_filename   - filename of phpcrontab.conf
 array $ct_param                - array containing scheduling parameters
 array $commands                - array containing comments
 array $side_line_comments      - array containing single line # comments 

 Returns a string containing the contents of the new phpcrontab.conf file

See editTabByForm

    function buildNewtab($max_line_number, $phpcrontab_filename, $ct_param, $commands, $side_line_comments, $top_line_comments, $bottom_line_comments) {
      
        global $PHP_SELF;
    
         $line_number=0;
         /* Get rid of # as first character of each line (in case user inserted it) */
         $top_line_comments=preg_replace("/^#/m", "", trim($top_line_comments));
         /* Inserts # as first character of each line */
         $top_line_comments=preg_replace("/^(.)/m", "#\\1", trim($top_line_comments));
          $bottom_line_comments=preg_replace("/^#/m", "", trim($bottom_line_comments));
         $bottom_line_comments=preg_replace("/^(.)/m", "#\\1", trim($bottom_line_comments));
    
         $new_tab_contents.=$top_line_comments."\r\n\r\n";
    
            while($line_number< $max_line_number) {
    
                    if($ct_param[$line_number]) {
                        $parameters=implode(" ", $ct_param[$line_number]);
                        $new_tab_contents.=$parameters." ".$commands[$line_number];
                        if($side_line_comments[$line_number]) {
                          $side_line_comments[$line_number]=preg_replace("/^#/m", "", trim($side_line_comments[$line_number]));
                          $side_line_comments[$line_number]=preg_replace("/^(.)/m", "#\\1", trim($side_line_comments[$line_number]));   
                        $new_tab_contents.="  ".$side_line_comments[$line_number]."\r\n";
                        } else {
                        $new_tab_contents.="\r\n";
                        } 
                   }
    
              $line_number++;  
            }
          
            $new_tab_contents.="\r\n\r\n".$bottom_line_comments;
            
            return trim($new_tab_contents); //contents of file to be saved
            
           
    }    

cpPhpcron

 void cpPhpcron ([string $phpcron_command]) 

 Displays control panel page controlling activity of phpcron.php

 string $phpcron_command - option argument which determines which command
                           to pass to phpcron (see switch statement)

 Echoes the control panel page to the screen

      
    function cpPhpcron ($phpcron_command="default") {
      global $PHP_SELF;
    
      global $phpcron_file;
      global $phpcron_off;
      global $phpcron_psinfo_file;
      global $assignment_info,$user_config_file, $left_mlc_ch, $right_mlc_ch, $sc_ch, $uc_contents_length;
      global $uc_contents, $uc_contents_length;
      global $cp_left_col;
      global $cp_right_col;
      global $cp_row_title;
      global $cp_title;
      global $status_on;
      global $status_off;
      global $status_venabled;
      global $phpcrontab_filename;
      global $log_result_file;
      global $admin_email_address;
      global $system_name;
      global $daemon_mode;
      global $phpcron_venabled_file;
      global $enable_virtual_daemon;
      global $phpcron_output_file;
      global $admin_email_address;
      global $error_messages;
      global $php_path;
    
       echo pageTitle("PHPCRON Admin - Control Panel");
    
    
      switch ($phpcron_command) {
    
      case "VStop":
    
        /* Disable Virtual Daemon */
             
        if (file_exists($phpcron_venabled_file)) {
             
        
        deleteFile($phpcron_venabled_file);
        
        appendToFile("
    ****************************************************************
    PHPCRON Virtual Daemon Stopped ".date("m/d/Y").":".date("h:i:s:A")."
    ****************************************************************
    ", $log_result_file);
    
     
        
        
        }
    
        break;
        
        case "DStop":
    
        /* Turn off Daemon */
        
        if(!stopOtherPhpcron()) {
         $error_messages.="
        Error: Cannot Stop Phpcron. Make sure the server process can write to ".dirname($phpron_off)."<BR>";
        
        }
      
        
        break;
    
      case "Start":
    
    
     
         $os_formatted_path=formatPath($phpcron_file);
    
      
              if ($enable_virtual_daemon) { 
    
        /*Enable Virtual Daemon */
    
            /* If no perpetual loop just write "VIRTUAL DAEMON ENABLED" to phpcron_venabled_file. This will
            allow phpcron to be run from the unix crontab with the phpcron_virtuald script. 
             */
             
    
    
           $save_results=saveFile("VIRTUAL DAEMON ENABLED", $phpcron_venabled_file);
                appendToFile("
    ****************************************************************
    PHPCRON Virtual Daemon Started ".date("m/d/Y").":".date("h:i:s:A")."
    ****************************************************************
    ", $log_result_file);
    
    
    
            if(!$save_results[0]) { //if not a successful save get error messages
    
            $index=1;
            $output="";
            while($save_results[$index]) {
            $output.=$save_results[$index];
            $index++;
            }
    
    
        $error_messages.=implode("\r\n",$save_results).
    "Cannot Enable Virtual Daemon- Must be able to write to ".formatPath($phpcron_venabled_file)." in order for PHPCRON Admin
    to control PHPCRON's execution. You will need to fix, and try again for PHPCRON Admin to work properly.<br>\r\n";
    
            } else {
            
           $error_messages.="The Virtual Daemon has been enabled. Make sure you place phpcron_virtuald
           on your unix crontab file using crontab -e.\n";
    
    
    
          }
    
            break;
        }
        
        /* Otherwise Start Up PHPCRON.PHP in either daemon(perpetual) or non-daemon mode) */
             
         if(isOtherPhpcrond() and $daemon_mode) { 
                $error_messages.="PHPCRON is already running in daemon mode - Cannot start more than one instance<br>";
    
         } else {
    
          /*Start phpcron in background. NoHup allows it to continue after logout */
    
       
          if ($daemon_mode) {
          $exec_string="nohup $php_path $os_formatted_path -r $phpcron_output_file > /dev/null &";
                } else {
          $exec_string="$php_path $os_formatted_path -r $phpcron_output_file";
                   
          }
          //$error_messages.=$exec_string;
           exec($exec_string);
    
    
          sleep(1);    
    
          
          
          if (!$daemon_mode) {
          $error_messages.="Ran PHPCRON only once. This is usually only 
          done for testing purposes.<br>\n";
          
          } 
          
        } 
          
              /* Know there's an error somewhere if the output file can't be made */
             
                if (!file_exists("$phpcron_output_file")) {
    
                 $error_messages.= "
                      Error: Failed to execute $phpcron_file. Check path and permissions. Can't read $phpcron_output_file.
                      <br>
                      ";
                }
    
    
    
    
      // } /* DCD Fix don't use this
        break;
    
    
      case "Email_Log":
    
      $attachment=$log_result_file;
      $mimetype="text/english";
    
      $subject="$system_name PHPCRON Log File Attached";
      $body="PHPCRON Log file is attached for $system_name";
    
    if($mailserver_error=mailAttachment($log_email_address, $subject, $body, $attachment, $mimetype)) {
    
    
      $error_messages.="Error: Unable to Email Log File:<br>\r\n".$mailserver_error;
      } else {
      $error_messages.="Emailed Log File to $admin_email_address";
      }
    
      break;
      
      
      
    
     case "Delete_Log":
       $error_messages.=clearLogFile($log_result_file);
       break;
    
    
    
      case "Save_UC":
    
    
        list($uc_contents, $uc_contents_array)=parseUserConfig($user_config_file, $left_mlc_ch, $right_mlc_ch, $sc_ch);
    
        /* For Debugging (echo to screen instead of save):
        echo "File Rebuilt is: ".nl2br(htmlentities(rebuildUserCfg($assignment_info, $uc_contents_array)))."<br>";
    
        */
    
        /* Rebuild User Configuration File, then Save it */
    
          $save_results=saveFile(rebuildUserCfg($assignment_info, $uc_contents_array), $user_config_file);
    
            if($save_results[0]) { //this would be successful save
        
            $settings_state="
            <em>
            Options saved with the following settings:
            </em>
            <br>
            ";
          } else {
            $index=1;
            while($save_results[$index]) {
            $error_messages.=$save_results[$index];
            $index++;
            }
            $element=0;
            $tab_save_error=true;
            $error_messages.="Please fix and try again.<br>";
    
    
          }
    
         
    
      
        //Load Newly Saved File
    
        $uc_contents = addslashes(implode ("", file ($user_config_file)));
        $uc_contents_length=strlen($uc_contents);  
        
        /* Include new values to override old values included at top of file */
        include($user_config_file); 
      //no break - just let it flow into default
    
      default:
      break;
    }
    
      
      /* Build Main Control Panel Box */
    
      $output.=    "
        <!--**********Begin JavaScript*******************-->
        <SCRIPT LANGUAGE=\"JavaScript\" type=\"text/javascript\">
         <!--  
    
    
       function isNumber(theField) {
       string=theField.value;
        for (i = 0; i < string.length; i++)   {   
              // Check that each character is number.
              var c = string.charAt(i);
      
              if (!((c >= \"0\") && (c <= \"9\")))  {
            
            alert(\"This field requires a number.\");
            theField.focus();
            return false;
            }
          }
         return true;
       }
    
        -->    
    
        </SCRIPT>
        <!--**********End JavaScript*******************-->
    
      <!--**********Begin Control Panel Table**************-->
      <table align=\"center\" border=\"0\" class=\"control_panel\" cellpadding=\"2\" cellspacing=\"0\" width=\"600px\" summary=\"Control Panel\">
            <tr>
            <td align=\"center\" valign=\"middle\" colspan=\"2\" style=$cp_title>
                    <strong>PHPCRON CONTROL PANEL</strong>
            </td>
          </tr>
          <tr>
              <td align=\"center\" valign=\"middle\" colspan=\"2\" style=$cp_row_title>
                  <strong>Status</strong>
              </td>
          </tr>
          <tr>
            <td style=$cp_left_col>
              Server OS:
            </td>
            <td style=$cp_right_col>
                ".PHP_OS."
            </td>
            </tr>
            ";
    
      if (isOtherPhpcrond()) {
    
      $daemon_running=true;
      }
      
      $output.="
            <tr>
              <td style=$cp_left_col>
                Mode:
              </td>
              ";
      if ($daemon_mode) {
        $output.="
             <td style=$cp_right_col>
                Daemon
              </td>
              </tr>
              ";
        
      } else {
      
       $output.="<td style=$cp_right_col>
                Non-Daemon
              </td>
              </tr>
              ";  
        
      }
      
        $output.="
    
            <tr>
              <td style=$cp_left_col>
                Daemon Running ?
              </td>
              ";
      
              
      if($daemon_running) {
      $output.="
              <td style=$status_on>
                Yes
              </td>
            </tr>";
            
    
      } else {
      
        $output.="
              <td style=$status_off>
                No
              </td>
            </tr>";
              
      
      
      }
    
    
      //Echo Process Info if in Unix
      if(!MS_WINDOWS and file_exists($phpcron_psinfo_file)) {
    
            $file_contents=file($phpcron_psinfo_file);
    
              $output.= "
                  <tr>
                  <td style=$cp_left_col>
                     Owner:
                   </td>
                  <td style=$cp_right_col>
                      $file_contents[1]<br>
                  </td>
                </tr>
                <tr>
                  <td style=$cp_left_col>
                     Process Id:
                   </td>
                  <td style=$cp_right_col>
                      $file_contents[2]
                      <br>
                      <br>
                  </td>
                </tr>
                ";
    
        }
    
      $output.="
        <tr>
            <td valign=\"baseline\" style=$cp_left_col>
              Start/Stop Controls:
            </td>
              ";
      
      if (MS_WINDOWS){
      if (!$daemon_running) {
      $output.="
         <td style=$cp_right_col>
      Start Control Not Available in Windows
      </td>
      </tr>
      <tr>";
      }
      
         
      $end_output .= "Please note that PHPCRON Admin does not allow starting PHPCRON under any Microsoft
      operating system (this may be fixed in a future version).  If using PHPCRON on a remote server, you 
      will need to start PHPCRON through a telnet session. A start control will only appear and work under Unix.
      You can however, enable the Virtual Daemon
      <br>
      ";
      }
    
      
    
      
     
      if (!MS_WINDOWS and $daemon_mode and !$daemon_running) {  
          $output.="
          <td style=$cp_right_col>
          <form action=$PHP_SELF method=\"get\">
          <input type=\"hidden\" name=\"phpcron_command\" value=\"Start\">
          <input type=\"submit\" value=\"Start Daemon\">
            </form>
            </td>
          ";
          
      } elseif (!MS_WINDOWS and !$daemon_mode and !$daemon_running) {
      
      $output.="
      
          <td style=$cp_right_col>
          <form action=$PHP_SELF method=\"get\">
            <input type=\"hidden\" name=\"phpcron_command\" value=\"Start\">
            <input type=\"submit\" value=\"Run PHPCRON Once\">
            </form>
            </td>
          ";
      
       
      }
    
      
     if ($daemon_running) {
    
     $output.="
             <td style=$cp_right_col>
            <form action=\"$PHP_SELF\" method=\"get\">
            <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
            <input type=\"hidden\" name=\"phpcron_command\" value=\"DStop\">
            <input type=\"submit\" value=\"Stop Daemon\">
            </form>
            </td>        
            ";
    
    }
    
    
      $output.="  
            </tr>
            <tr>
              <td align=\"center\" valign=\"middle\" colspan=\"2\" style=$cp_row_title>
                  <strong>Virtual Daemon</strong>
              </td>
          </tr>    
      
            <tr>
              <td style=$cp_left_col>
                Virtual Daemon:
              </td>
              ";
      
      
      if (file_exists($phpcron_venabled_file)) {
          $output.="
              <td style=$status_on >
                Enabled
             </td>
            </tr>
            ";
       
      } else {
          $output.="
              <td style=$status_off >
                 Disabled
              </td>
            </tr>
            ";
      }
    
    
    
    if (file_exists($phpcron_venabled_file)) {
    
     
      $output.="
            <tr>
            <td style=$cp_left_col>
            &nbsp;
            </td>
            <td style=$cp_right_col>    
            <form action=\"$PHP_SELF\" method=\"get\">
            <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
            <input type=\"hidden\" name=\"phpcron_command\" value=\"VStop\">
            <input type=\"submit\" value=\"Disable\">
            </form>
            </td>
            
            ";
    
    } else {
    
        $output.="
          <tr>
          <td style=$cp_left_col>
            &nbsp;
          </td>
        
          <td style=$cp_right_col>    
          <form action=$PHP_SELF method=\"get\">
          <input type=\"hidden\" name=\"phpcron_command\" value=\"Start\">       
          <input type=\"hidden\" name=\"enable_virtual_daemon\" value=\"true\">   
          <input type=\"submit\" value=\"Enable\">
            </form>
            </td>
            
          ";
    
    
    }
    
    
    
      /* Save and Reset of Options */
    
    
        //allow to revert to original file
      $output.="
    
          </tr>
                    <tr>
              <td align=\"center\" valign=\"middle\" colspan=\"2\" style=$cp_row_title>
                  <strong>Update Status</strong>
          </td>
          </tr>    
          <tr>
                    <td style=$cp_left_col>
                        &nbsp;
                    </td>
                    <td style=$cp_right_col>
                    <form action=\"$PHP_SELF\" method=\"post\">
                    <input type=\"submit\" value=\"Update\">
                    <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
                    </form>
    
                    <!--************Begin Options Form************ -->
    
    
                    </td>
    
          </tr>
    
    
          ";
    
         //Save Options
    
    
      /* Build Options Box */
    
         if($phpcron_command != "Save_UC") {
    
          $settings_state="
            <em>
            Current Settings:
            </em>
            <br>";
         }
        /*Separate out Multi-Line Comments, Single Line Comments, and Executable Portions of
        file into identifiable arrays stored in $uc_contents_array */
        list($uc_contents, $uc_contents_array)=parseUserConfig($user_config_file, $left_mlc_ch, $right_mlc_ch, $sc_ch);
    
    
        //Split up executable string into ordered arrays containing variable, value, and type of variable
    
          if($assignment_info=getAssignmentInfo($uc_contents_array)){
    
            $options_output.="
            <tr>
              <td align=\"center\" valign=\"middle\" colspan=\"2\" style=$cp_row_title>
                  <form action=\"$PHP_SELF\" method=\"post\">
                  <strong>Options</strong>
                  <br>
                  (Set in ".formatPath($user_config_file).
          ")<br>
                  $settings_state
              </td>
    
            ";
    
    
          $horiz_pos=0;
          while($horiz_pos<$uc_contents_length) {
    
          $i=0;
            while($assignment_info[$horiz_pos][$i]["variable"]) {
                $cell_width="400px";
    
                $options_output.="
                </tr>
                <tr>
                   <td style=$cp_left_col width=\"$cell_width\">".
                    $assignment_info[$horiz_pos][$i]["variable"].
                    " (".$assignment_info[$horiz_pos][$i]["type"].
                    "):".
                  "</td>
                  <td style=$cp_right_col width=\"$cell_width\" valign=\"middle\">".
                    getFormElement($assignment_info[$horiz_pos][$i]["variable"], $assignment_info[$horiz_pos][$i]["value"], $assignment_info[$horiz_pos][$i]["type"], $horiz_pos, $i)."
                    <input type=\"hidden\" name=\"assignment_info[$horiz_pos][$i][variable]\" value=\"".$assignment_info[$horiz_pos][$i][variable]."\">
                    
                      <input type=\"hidden\" name=\"assignment_info[$horiz_pos][$i][type]\" value=\"".$assignment_info[$horiz_pos][$i]["type"]."\">
    
                  </td>
                ";
                $i++;
    
            }
          $horiz_pos++;
          }
            $options_output.=
            "
    
               <!--*****************Begin Submit Buttons *********************-->
             <tr>
                  <td style=$cp_left_col>
                  <HR>
                  </td>
                  <td style=$cp_right_col>
                  <HR>
                  </td>
             </tr>
    
    
             <tr>
              <td style=$cp_left_col>
              Save Changes To Options:
              </td>
              <td style=$cp_right_col>
    
              <input type=\"submit\" value=\"Save\">
              <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
              <input type=\"hidden\" name=\"phpcron_command\" value=\"Save_UC\">
              </form>
              </td>
            </tr>
    
               <tr>
                    <td style=$cp_left_col >
                        Reset Options to Values in File:
                    </td>
                    <td style=$cp_right_col>
                    <form action=\"$PHP_SELF\" method=\"get\">
                    <input type=\"submit\" value=\"Reset\">
                    <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
                    </form>
                    </td>
    
               </tr>
    
              <!--*****************End Submit Buttons *********************-->
    
    
    
             <!--*************************BEGIN PHPCRONTAB DISPLAY IN TEXT AREA*********************-->
            <tr>
    
                   <td align=\"center\" valign=\"middle\" colspan=\"2\" style=$cp_row_title>
                  <strong>PHPCRONTAB SCHEDULE </strong>
                  </td>
            </tr>
            <tr>
    
    
                <td style=$cp_right_col colspan=\"2\" >
                    <form name=\"po_form\">
                      <input type=\"hidden\" name=\"focushere\">
                          <textarea readonly  onFocus=\"this.blur();\" wrap=\"off\" cols=\"80\" rows=\"20\" name=\"command_output_textarea\">";
    
                          //Read from phpcrontab file
                          $path_errors=isPathBad($phpcrontab_filename,true,true); 
                            if ($path_errors) {
    //                      $error_messages.="Error: Unable to read file ".formatPath($phpcrontab_filename)."<br>";
    
                            while ( list($file_or_dir, $error_string) = each($path_errors)) {
    
                              while (list($each_error)  = each($error_string)) {
                                $error_messages.=$path_errors[$file_or_dir][$each_message];
                              }
                             }
                             }
    
                              $tab_output=explode("<br>","ERROR: CANNOT DISPLAY PHPCRONTAB\n ");
                            if (is_readable($phpcrontab_filename)) {
                              $tab_output=file($phpcrontab_filename);
                           }
    
                          $options_output.=implode("",$tab_output)."
                        </textarea>
                    </form>
                </td>
            </tr>
    
             <!--*************************END PHPCRONTAB DISPLAY IN TEXT AREA*********************-->
    
    
               <!--*****************Begin Submit Buttons *********************-->
             <tr>
    
                  <td style=$cp_right_col colspan=\"2\">
                  <HR>
                  </td>
             </tr>
    
    
    
             <tr>
             <!--
                    <td style=$cp_left_col >
                        Edit Schedule (Basic):
                    </td>
            -->
                    <td style=$cp_right_col colspan=\"2\">
                    <form action=\"$PHP_SELF\" method=\"get\">
                    <input type=\"submit\" value=\"Edit Schedule (Basic)\">
                    <input type=\"hidden\" name=\"admin_subpage\" value=\"Edit_Tab_By_Form\">
                    </form>
                    </td>
    
               </tr>
               <tr>
    
                  <td style=$cp_right_col colspan=\"2\">
                  <HR>
                  </td>
             </tr>
    
    
              <!--*****************End Submit Buttons *********************-->
    
    
    
        <!--*************************BEGIN PHPCRON OUTPUT DISPLAY IN TEXT AREA*********************-->
            <tr>
    
                   <td align=\"center\" valign=\"middle\" colspan=\"2\" style=$cp_row_title>
                  <a name=\"Output_Display\">
                  <strong>PHPCRON OUTPUT </strong>
                  </a>
                  </td>
            </tr>
            <tr>
    
    
                <td style=$cp_right_col colspan=\"2\" >
                    <form name=\"po_form\">
                      <input type=\"hidden\" name=\"focushere\">
                          <textarea readonly  onFocus=\"this.blur();\" wrap=\"off\" cols=\"80\" rows=\"20\" name=\"command_output_textarea\">";
    
                          //Read from phpcron_output file
                          if ($path_errors=isPathBad("$phpcron_output_file",true,true)) {
    
                           $error_messages.="Error: Unable to read output file ".formatPath("$phpcron_output_file")."<br>";
    
                            while ( list($file_or_dir, $error_string) = each($path_errors)) {
    
                              while (list($each_error)  = each($error_string)) {
                                $error_messages.=$path_errors[$file_or_dir][$each_error];
                              }
                             }
                    
                              $command_output=explode("<br>","ERROR: CANNOT DISPLAY PHPCRON OUTPUT\r\nCannot Read Output File $phpcron_output_file\n ");
                            
                           } else {
                              $command_output=file("$phpcron_output_file");
                           }
    
                          $options_output.=implode("",$command_output)."
                        </textarea>
                    </form>
                </td>
            </tr>
    
             <!--*************************END PHPCRON OUTPUT DISPLAY IN TEXT AREA*********************-->
             <!--*************************BEGIN SUBMIT BUTTONS ****************************-->
             <tr>
                    <td style=$cp_right_col colspan=\"2\">
                    <form action=\"$PHP_SELF#Output_Display\" method=\"post\">
                    <input type=\"submit\" value=\"Update Display\">
                    <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
                    </form>
                    </td>
    
              </tr>
              <!--*************************END SUBMIT BUTTONS ****************************-->
    
          <!--*************************BEGIN PHPCRON LOG DISPLAY IN TEXT AREA*********************-->
            <tr>
    
                   <td align=\"center\" valign=\"middle\" colspan=\"2\" style=$cp_row_title>
                  <a name=\"log_display\">
                  <strong>PHPCRON COMMAND LOG </strong>
                  </a>
    
                  </td>
            </tr>
            <tr>
    
    
    
                <td style=$cp_right_col colspan=\"2\">
    
    
                    <form name=\"log_form\" >
    
                      <input type=\"hidden\" name=\"focuslog\">
                          <textarea readonly  onFocus=\"this.blur();\" wrap=\"off\" cols=\"80\" rows=\"20\" name=\"command_output_textarea\">";
    
                          //Read from phpcron_output file
                          if ($path_errors=isPathBad($log_result_file,true,true)) {
    
    
                           
    
                            while ( list($file_or_dir, $error_string) = each($path_errors)) {
    
                              while (list($each_error)  = each($error_string)) {
                                $error_messages.=$path_errors[$file_or_dir][$each_error];
                              }
                             }
                             
                           $error_messages.="Error: Unable to read log file ".formatPath($log_result_file)."<br>
                           This will occur if Phpcron has not been run as a Daemon or Virtual Daemon yet, since
                           the log is only created at that point.<br>";
                           
    
                              $log_output=explode("<br>","ERROR: CANNOT DISPLAY LOG FILE\r\nTo create, run Phpcron in Daemon mode or as a Virtual Daemon.\r\n                         
                              ");
                           } else {
                              $log_output=file($log_result_file);
                           }
    
                          $options_output.=implode("",$log_output)."
                        </textarea>
    
                    </form>
    
                </td>
    
    
            </tr>
    
             <!--*************************END PHPCRON LOG DISPLAY IN TEXT AREA*********************-->
             <!--*************************BEGIN SUBMIT BUTTONS ****************************-->
             <tr>
                    <td style=$cp_right_col colspan=\"2\">
                    <form action=\"$PHP_SELF#log_display\" method=\"post\" onSubmit=\"document.log_form.scrollIntoView(false);\">
                    <input type=\"submit\" value=\"Update Display\">
                    
                    </form>
                    
                    <form action=\"$PHP_SELF\" method=\"get\">
                    <input type=\"submit\" value=\"Download Log File\">
                    <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
                    <input type=\"hidden\" name=\"download_log\" value=\"true\">
                    </form>
    
                    <form action=\"$PHP_SELF\" method=\"get\">
                    <input type=\"submit\" value=\"Email Log File To:\">
                    <input type=\"text\" name=\"log_email_address\" value=\"$admin_email_address\"> 
                    <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
                    <input type=\"hidden\" name=\"phpcron_command\" value=\"Email_Log\">
                    </form>
                    
                    <form action=\"$PHP_SELF\" method=\"get\">
                    <input type=\"submit\" value=\"Permanently Clear Log File\">
                    <input type=\"hidden\" name=\"admin_subpage\" value=\"Control_Panel\">
                    <input type=\"hidden\" name=\"phpcron_command\" value=\"Delete_Log\">
                    </form>
    
                    </td>
    
              </tr>
              <!--*************************END SUBMIT BUTTONS ****************************-->
    
    
    
              <tr>
                <td align=\"center\" colspan=\"2\" style=$cp_row_title>
                       &nbsp;
                </td>
    
            </tr>
    
            </table>
    
           <!--**********End Control Panel Table**************-->
            ";
    
        } else {
          
            /* Syntax for user config file allows comments but is somewhat strict -stick to 
            assignments only! and no sinqle quoted strings */
            $output.="
            </table>
            <!--**********End Control Panel Table**************-->
            ";
            $error_messages.= "
            <br>Error: Syntax error in user configuration file ".formatPath($user_config_file).". User configuration file should only
        contain variable assignments and comments in proper php syntax - and must include php ending script characters (only &lt?php and ?&gt 
        are supported). No other statements or html should be included. Please edit manually and try again.
            ";
        }
    
    
      /* Echo to Page */
    
      echo menuBar()."<br>";
        if ($error_messages) {
           echoErrorMessages($error_messages);
        }
      echo $output.
      $options_output;
        if($end_output){
        echo "
        <span class=\"notes\">
           <hr>
            $end_output
          <hr>
        </span>
        "; 
        }
      echo "
      <br>
      ".menuBar();
    
    
    }

editTabByForm

 void editTabByForm (string $phpcrontab_filename) 

 Displays form which edits the phpcrontab.conf file. 

 string $phpcrontab_filename - string containing filename of phpcrontab.conf

 Echoes the phpcrontab.conf edit page

    function editTabByForm($phpcrontab_filename){
    global $PHP_SELF;
    global $new_tabfilename;
    global $edit_table_title;
    global $edit_table_title_no_border;
    global $edit_tab_by_form;
    global $tab_save_error;
    global $new_tab_contents;
    global $old_tabfilename;
    global $create_tab;
    global $secure;
    
    
    
    /*NOTE: Allow create file: if there is no phpcrontab file or no parameters then 
    substitute another array for $line and save new file. */
    
    if ($tab_save_error) {
      $new_tabfilename=""; //initialize
      $phpcrontab_filename=$old_tabfilename;
      /* Don't read from file - just use attempted saved contents if save failure */
      $phpcronconf_array=explode("\n",stripslashes($new_tab_contents));
    } elseif(!$path_errors=isPathBad($phpcrontab_filename,true,true)) {
     /* Read conf file into an array, with each line being an element in the array */
    
    $phpcronconf_array=file($phpcrontab_filename);
    } else {
    
    if (is_readable($phpcrontab_filename)) {
    $phpcronconf_array=file($phpcrontab_filename);
    }
    //If there are  path errors, report them
    
        while ( list($file_or_dir, $error_string) = each($path_errors)) {
    
          while (list($each_message)  = each($error_string)) {
            $error_messages.=$path_errors[$file_or_dir][$each_message];
    
          }
        }
    
        $error_messages="<h3>Cannot Edit $phpcrontab_filename because of file errors:</h3>".$error_messages;
       
    }
    
    
    
    
    
        //Tests for existence of phpcrontab file - if does not exist, creates one
    
       if(!file_exists($phpcrontab_filename) or $create_tab) {
    
        if (!$create_tab) {
          $error_messages.="Creating new phpcrontab file - No existing file found for $phpcrontab_filename<br>";
        } else {
          $error_messages.="Creating new phpcrontab file<br>";
        }
        $create_tab=true;
        $create_tab_contents=
    "# comments: lines must begin with a #
    #  Phpcrontab.conf
    #The phpcontab.conf file contains a schedule of scripts/programs to
    # run in the traditional crontab format:
    # minute (0-59) hour (0-23) day of month (1-31) month(1-12) day of week(0-6)  command
    # Wild Cards are allowed. Each parameter is separated by one space.
    # Example:
    #
    # 59 3 * * 5  php sample_script.php   # every Friday at 3:59 a.m.
    #Ranges and multiple values will also work:
    # 0 0 1-15 * *   perl sample_script.pl   #executes on 1st through 15th of month
    # 0 0 1-3,15 * *   perl sample_script.pl   # executes on 1st-3rd and 15th of month
    #
    # MINUTES HOUR MONTHDAY MONTH WEEKDAYNUM
    ";
    
        $phpcronconf_array=explode("\n",$create_tab_contents);
    
        
       }
    
    $crontab_stripped=formatPath($phpcrontab_filename); 
    
    
    $output.="
        <!--**********Begin JavaScript*******************-->
        <SCRIPT LANGUAGE=\"JavaScript\" type=\"text/javascript\">
         <!--  
    
               function isNumberBetween(string,low,high) {
                for (i = 0; i < string.length; i++)
                {   
                    // Check that each character is number.
                    var c = string.charAt(i);
    
                    if (!((c >= \"0\") && (c <= \"9\"))) return false;
                }
    
               var number = parseInt (string); //converts string to integer 
                return ((number >= low) && (number <= high));
    
               }
    
            function trim(str)
            {
            var i = 0,j = str.length - 1;
    
                    while(str.charAt(i) == ' ') i++;
                    while(str.charAt(j) == ' ') j--;
            j++;
    
            return str.substring(i,j);
    
            }
    
    
    
    
            function validateField (field_string, textvalue, individual_parameter, theField, max_low, max_high) {
                   var warning_message=\"\";
    
                   if(!textvalue.match(/^(([0-9]{1,2}|[0-9]{1,2}-[0-9]{1,2}),?)+$/))
                     return warn(theField, textvalue + \" in the \" + field_string + \"  field is in an incorrect format.\");
    
    
    
                  for (i_array in individual_parameter)
                  {
    
                 /*warning_message=warning_message+\"i_array: \" + i_array + \"Being Evaluated:\" + individual_parameter[i_array] + \"\\r\\n\";
                 */
                   /* Check for Range */
                  if(individual_parameter[i_array].match(/^[0-9]*-[0-9]*,?$/)) {
    
                   var range=new Array();
                  range=individual_parameter[i_array].match(/[0-9]*-?/g) /* explode by hyphen*/
    
                      /*Just deletes , or - at end of string if it exists */
                     range[0]=range[0].replace(/[,-]/g,\"\");       
                     range[1]=range[1].replace(/[,-]/g,\"\");
                    /*warning_message=warning_message+ \"Low Value: \" + range[0] + \" High Value is: \" + range[1] + \"\\r\\n \";;
                    */
    
                    /*Make Sure High > Low */
    
                    if (parseInt(range[0])>=parseInt(range[1])) {
    
                    warning_message=warning_message + \"Low value of range \" + individual_parameter[i_array] + \" in \" + field_string + \" field is greater than or equal to high value.\\r\\n\";
    
    
                    }
                    for (i_range in range)
                    {
    
                      /*check each range to see if between correct values */
                       if (isNumberBetween(range[i_range],max_low,max_high)!=true)
                      {
                      if(range[i_range]==\"\") {
    
                      continue; //continue inner loop
    
                      }
                      warning_message=warning_message + range[i_range] + \" is in the \" + field_string + \" field which requires a number between \" + max_low + \" and \" + max_high +\".\\r\\n\";
    
                      }
    
    
                    }                     
    
    
                  continue; //continue outer loop
                  }
                    /*warning_message=warning_message+ \"Second Being Evaluated:\" + individual_parameter[i_array] + \"\\r\\n\";
                    */
                    /*Just deletes , or - at end of string if it exists */
                    individual_parameter[i_array]=individual_parameter[i_array].replace(/[,-]/g,\"\"); 
    
    
                       if (isNumberBetween(individual_parameter[i_array],max_low,max_high)!=true)
                      {
                      if(individual_parameter[i_array]==\"\") return true;
                      warning_message=warning_message + individual_parameter[i_array] + \" is in the \" + field_string + \" field which requires a number between \" + max_low + \" and \" + max_high +\".\\r\\n\";
                      }
                      i_array++;
                  }    
    
                  if(warning_message !=\"\") {
                  warning_message=\"Error(s):\\r\\n\" + warning_message;      
                  return warn(theField,warning_message);
                  } else {
                  return true;
                  }
    
    
            }
    
    
    
      function checkParameter(theField, parameter_type) {
      
        
          /*Textvalue is string hold all of values in field */
          textvalue=trim(theField.value);
          var i_array=0;
     
                
          if (textvalue == \"*\") return true;
          var individual_parameter=new Array();
          
          /*Fill Array Individual Parameter with Values Separated by , or hyphens*/
          individual_parameter=textvalue.match(/[0-9]+(-[0-9]+)?,?/g) /* took out hypen*/
      
              
          switch (parameter_type) {
          
                
          case 0:
          return validateField (\"Minutes\", textvalue, individual_parameter, theField, 0, 59);
    
          case 1:
          return validateField (\"Hour\", textvalue, individual_parameter, theField, 0, 23);
    
          case 2:
          return validateField (\"Day of Month\", textvalue, individual_parameter, theField, 0, 31);
    
          case 3:
          return validateField (\"Month\", textvalue, individual_parameter, theField, 1, 12);
    
          case 4:
          return validateField (\"Week Day\", textvalue, individual_parameter, theField, 0, 6);
          
          default:
          return warn(theField, \"Error in Code: Parameter Type is Invalid - Can't validate entry\");
          
           }
    
    
        }   
    
        
    
        function warn (theField, s){   
    
            alert(s);
    
            return false;
        }
    
    
        function NoEmpty(theField, s) {
        if(theField.value==\"\")
            alert(\"The \" + s + \" field requires an entry\");
        }
    
        -->  
    
        </SCRIPT>
        <!--**********End *******************-->
        
          
        <form action=\"$PHP_SELF?admin_subpage=Save_Edtab\" STYLE=\"margin-bottom: 0\" method=\"post\">
          
        <!--*************** Begin Schedule Programs Table (edit phpcrontab info ) *********-->
        <table align=\"center\" width=\"600px\" style=$edit_tab_by_form border=\"0\" cellspacing=\"0\" cellpadding=\"2\" summary=\"PHPCRONTAB Edit Form\">
    
         <tr >
          <td colspan=\"7\" align=\"center\" style=$edit_table_title>
          
            <h2>Schedule Programs</h2>";
    
    if ($create_tab) {
      $output.= "
      <h4>New PHPCRONTAB File</h4>";
    } else {
         $output.=
         "<h4>(edit ".chunk_split($crontab_stripped, 20, " ").")</h4>";
    }
    
    $output.="
           </td>
          </tr>
          ";
    
              $line_number=0;
            
             /* Loop through the array containing the lines of the phpcrontab.conf file */
             while ($line=$phpcronconf_array[$line_number]) {   
     
    
                     $line=trim($line); //trim extra spaces
                     /* Get lines which contain mixed parameters and comments */
                     preg_match("/#.*$/",$line, $side_line_comments);
                     /* Gets rid of # as first character of each line - 
                     add this back later when save file. User does not have to enter */
                        $side_line_comments[0]=preg_replace("/^#/m", "", trim($side_line_comments[0]));  
    
                     preg_match("/^#.*$/",$line, $full_line_comments); 
                    
                     /* Get rid of # as first character of each line - add this back later when save file. 
                       User does not have to enter. Also move lines over preserve vertical whitespace. */
                     $full_line_comments[0]=trim(preg_replace("/^#(.)/m", "\\1", trim($full_line_comments[0])));
                       //  preserve vertial whitespace
                       $full_line_comments[0]=preg_replace("/^#/m", " ", $full_line_comments[0]);
      
      
                       if($full_line_comments[0]) {
                      $top_line_comments.=$full_line_comments[0]."\r\n";
                      $number_of_top_comments++;
                    }
      
                  
                       if($param_headings_printed  and $full_line_comments[0]) {
                      $bottom_line_comments.=$full_line_comments[0]."\r\n";
                      $number_of_bottom_comments++;
                    }
                     /* Delete commented out sections and lines */
                     $line=preg_replace("/#.*$/","",$line); 
    
                     /* If line is a blank line then ignore line, otherwise
                       process commands */
    
                           if(!preg_match ("/^\s*$/", $line)) {
    
                      /*Print out Top Comments into a Text Area if haven't printed*/
    
                       if (!$param_headings_printed) {              
    
                         $output.=tabTopComments($top_line_comments, $number_of_top_comments);  
                        $param_headings_printed=true; //print headings only once
                
                      }
    
                          /* Parse line into a 6 element array (0-5), 
                            5 time parameters (minute, hour, day of month, month, day of week)
                            + command string */
                                $line = explode(" ", $line,6);
              
                                $command_text=array_pop($line);  // pop off the command text 
                          $command_text=trim ($command_text); //trim extra spaces
            
                            /* Cycle through first five parameters horizontally and put in 
                          text boxes */
    
                                $parameter_no=0;       
                                      
                          while ($parameter_no<5){
                  
                          $box_size=4;
                        
    
                          $output.= "
              
              <td align=\"center\" >        
                <input class=\"color\" name=\"ct_param[$line_number][$parameter_no]\" type=\"text\"  size=\"$box_size\" value=\"$line[$parameter_no]\" onChange=\"checkParameter(this, $parameter_no)\" >
              </td>";
                        
                                                
                          $parameter_no++;
                          }    
          
                          /* Add Commands and Side Line Comment Boxes */
    
                          $output.="
                  <td align=\"center\">
                    <input class=\"color\" type=\"text\" name=\"commands[$line_number]\" value=\"$command_text\"  onChange=\"NoEmpty(this, 'Commands')\">
                  </td>
                  <td align=\"center\">
                     <input class=\"color\" type=\"text\" name=\"side_line_comments[$line_number]\" value=\"$side_line_comments[0]\"> 
                  </td>
                  </tr>";
                  
            
                    } // end of check for blank line
                        $line_number++;
            
          } //end of parse loop  
    
           if (!$param_headings_printed) {
    
             /* If no commands in file, print out Top Comments into a Text Area as would not have
              previously printed */
             
             $output.=tabTopComments($top_line_comments, $number_of_top_comments);  
            $param_headings_printed=true; //print headings only once
          }
    
          /* Add 5 additional lines for new commands. Can do 5 at a time. */
    
              $max_lines=$line_number+5; //defines line number of last additional command input
              $output.="    
              <tr>
                  <td align=\"center\" style=$edit_table_title colspan=\"7\">
                    Add Commands (up to 5 at a time):
                  </td>
              </tr>
             <tr>
             ";
          
    
           while($line_number<$max_lines) { 
    
                 $parameter_no=0;       
      
              while ($parameter_no<5){
    
              $box_size=4;
          
    
              $output.= "
    <td align=\"center\" >        
    <input class=\"color\" name=\"ct_param[$line_number][$parameter_no]\" type=\"text\"  size=\"$box_size\" value=\"$line[$parameter_no]\" onChange=\"checkParameter(this, $parameter_no)\" >
    </td>
    ";
            
                                    
              $parameter_no++;
              }    
    
             $output.="         
               <td align=\"center\">
                 <input class=\"color\" type=\"text\" name=\"commands[$line_number]\" onChange=\"NoEmpty(this, 'Commands')\"> 
               </td>
               <td align=\"center\">
                 <input class=\"color\" type=\"text\" name=\"side_line_comments[$line_number]\">
               </td>
             </tr>
            <tr>
             ";
    
              $line_number++; 
          }
            
          /* Bottom Comments */
          $output.="
            <td align=\"center\" colspan=\"7\" style=$edit_table_title>Bottom Comments:</td></tr>
            <tr>
            <td colspan=\"7\" align=\"center\">
                <textarea name=\"bottom_line_comments\" cols=\"80\" rows=\"$number_of_bottom_comments\">$bottom_line_comments
              </textarea>
              </td>
          </tr>
          <!--*************** End Schedule Programs Section of Table (edit phpcrontab info ) *********-->   
          
      <tr>
        <td style=$edit_table_title_no_border colspan=7>
      
      <!--******* FORM SUBMITS*********-->
       ";
       if ($create_tab) {
       if (!$secure) {
       $output.="
         File: <em>New PHPCRONTAB File </em><br> 
         <input type=\"submit\" value=\"Save As:\">
    
          <input class=\"color\" type=\"text\" name=\"new_tabfilename\">" ;
        }
        $output.="
          <br>
          Check to Save Over Existing File:
           <input type=\"checkbox\" name=\"overwrite\" value=\"true\" class=\"title\">
            <input type=\"hidden\"  name=\"max_line_number\" value=\"$line_number\"> 
      
          <input type=\"hidden\" name=\"current_tabfilename\" value=\"$phpcrontab_filename\">
          
          </form>
        </td>
        </tr>
      <tr>
      <td style=$edit_table_title_no_border  colspan=7>
          ";
    
       } else {
       $output.="
           <HR>
          <input type=\"submit\" value=\"Save\">";
      if (!$secure) {
      $output.=  "
          <input type=\"submit\" value=\"Save As:\">
          <input class=\"color\" type=\"text\" name=\"new_tabfilename\">";
      }
      $output.="
          <br> 
          Check to Save Over Existing File:
          <input type=\"checkbox\" name=\"overwrite\" value=\"true\" class=\"title\">  
            <input type=\"hidden\" value=\"$line_number\" name=\"max_line_number\"> 
          <input type=\"hidden\" name=\"current_tabfilename\" value=\"$phpcrontab_filename\">
      
          
          </form>
        </td>
        </tr>
      <tr>
      <td border=0  style=$edit_table_title_no_border colspan=7>
          ";
    
          /* This allows another file to be opened - commenting this out because I changed my mind.
          Think its better for a crontab file to be opened by changing user configuration file. 
          But if you want to use this feature it is implemented, just uncomment.
             <form action=\"$PHP_SELF\" method=\"get\">
            <input type=\"submit\" value=\"Open:\">
          <input class=\"color\" type=\"text\" name=\"new_tabfilename\"> 
          <input type=\"hidden\" value=\"Edit_Tab_By_Form\" name=\"admin_subpage\">
          </form>
          */
    
      $output.="
          <form action=\"$PHP_SELF\" method=\"get\">
            <input type=\"submit\" value=\"Create New PHPCRONTAB File\">
          <input type=\"hidden\" value=\"Edit_Tab_By_Form\" name=\"admin_subpage\">
          
          <input type=\"hidden\" value=\"true\" name=\"create_tab\">
         </form> 
        </td>
        </tr>
      <tr>
      <td border=0 style=$edit_table_title_no_border  colspan=7> 
          ";
      } 
    
    $output.="
          <HR>
          File: <em>$crontab_stripped</em>
          </td>
          </tr>
      </table>
      <br>
       <!--*******END FORM SUBMITS *********-->";
    
      
                  if ($new_tabfilename) {
    
                if($path_errors=isPathBad($new_tabfilename, true)) {
    
                     while ( list($file_or_dir, $error_messages) = each($path_errors)) {
    
                      while (list($each_message)  = each($error_messages)) {
                        $error_messages.=$path_errors[$file_or_dir][$each_message]; 
                      }
                  }
    
                 }
    
    
                else {
                  $phpcrontab_filename=$new_tabfilename;
                  }
                }
    
      
      if($error_messages) {echoErrorMessages($error_messages);};
      echo $output;   
    
    
    
    } //end of function    

fullEditBox

 void fullEditBox (string $file_name, string $box_title) 

 Allows you to edit,save,and save the text file $file_name in a text box

 string $filename - string containing filename of phpcrontab.conf
 string $box_title - string containing title of the edit box

 Echoes a textbox containing the contents of $filename with controls to 
 save, etc.

    function fullEditBox($file_name, $box_title){
         global $admin_subpage;
         global $PHP_SELF;
         global $modified_contents;
         global $mc_rows;
         global $fe_save_error;
         global $full_edit_title;
         global $secure;
    
    
    
        if($path_errors=isPathbad($file_name, true, true)) {
    
          while ( list($file_or_dir, $error_string) = each($path_errors)) {
    
    
    
          while (list($each_message)  = each($error_string)) {
            $error_messages.=$path_errors[$file_or_dir][$each_message];  
        }
    
        }
    
        $error_messages="<h3>Cannot Edit $file_name because of file errors:<br></h3>".$error_messages;
        //if path errors, echo message and retur
        
        if (!is_readable($file_name)){
        echoErrorMessages($error_messages);
        echo $output;
        return;
        }
    
       }
        //Empty file into array
         $file_array=file($file_name);
    
        if ($fe_save_error) {   //if previously bad save, display modified contents that weren't saved
          $file_string=$modified_contents;
        } else {
    
          //Implode file_array to put string in text area element
           $file_string=addslashes(trim(implode("",$file_array)));
    
            //Set number of rows
           if ($file_array) {
               $total_lines=count($file_array);
            }
           $mc_rows=$total_lines+10;
    
        }
        //Build output
    
         $output="
        <!--*********** Begin Full Edit Box For $file_name************-->
        <br>
        <table border=\"1\" cellpadding=\"2\" width=\"600px\" cellspacing=\"0\" align=\"center\">
        <tr>
          <td align=center style=$full_edit_title colspan=7 >
           <h3>
      
              $box_title
              <br><br>
               (edit ".chunk_split(formatPath($file_name), 20, " ").")
              <br>
        
          </h3>
          </td>
        </tr>
        <tr>
          <td style=$full_edit_title>
    
             <form action=\"$PHP_SELF\" method=\"post\">
                <div align=\"center\">
                 <textarea name=\"modified_contents\"  wrap=\"off\" cols=\"80\" rows=\"$mc_rows\" 
                 class=\"fulledit\">".stripslashes($file_string)."
                 </textarea>
              </div>
               
               <HR>
               <input type=\"submit\" value=\"Save\">";
    if (!$secure) {
    $output.= "<input type=\"submit\" value=\"Save As:\">
               <input type=\"text\" class=\"color\" name=\"new_filename\">";
    }
     $output.=" <br>
                Check to Save Over Existing File:
               <input type=\"checkbox\" name=\"overwrite\" value=\"true\" class=\"title\">
            
                 <input type=\"hidden\" class=\"color\" name=\"current_filename\" value=\"$file_name\">
               <input type=\"hidden\" name=\"admin_subpage\" value=\"$admin_subpage\">
               <input type=\"hidden\" name=\"mc_rows\" value=\"$mc_rows\">
                   </form>
    
            
          <form action=\"$PHP_SELF\" method=\"post\">
            <input type=\"submit\" value=\"Reload Current File\">
             <input type=\"hidden\" name=\"admin_subpage\" value=\"$admin_subpage\">
    
          </form>
          <HR>
          Current File: ".formatPath($file_name)."
           </td>
          </tr>
        </table>
         <br>
         <!--*********** End Full Edit Box For $file_name*************-->
         ";
         if($error_messages) {
            echoErrorMessages($error_messages);
         }
         echo $output;
    
    }    
    

getAssignmentInfo

 array getAssignmentInfo (array $uc_contents_array) 

 Used in parsing phpcron_userconfig.php. Determines the variable,
 value and type of a quoted variable assignment,

 array $uc_contents_array[$horiz_pos]["executable"]
 
 A 2 dimensional array which contains the variable assignment strings derived 
 from  the phpcron_userconfig.php

 Returns false if a string in the array is not a variable assignment or, if
 successful, a three dimensional array containing variable name, value, and
 type for  each assignment in the $uc_contents_array:
 $return_value[$horiz_pos][$i]["variable"], 
 $return_value[$horiz_pos],[$i]["type"],  
 $return_value[$horiz_pos],[$i]["type"]
 This information is assigned to $assignment_info in cpPhpcron. 

    function getAssignmentInfo ($uc_contents_array){ 
    /*Returns variable, value and type of quoted assignment (i.e., when $assignment is a 
    variable assignment like "a=3;" */
    
      global $user_config_file;
      global $uc_contents_length;
      include("$user_config_file");
    
      $horiz_pos=0;
    
      
      while($horiz_pos<$uc_contents_length) {
    
      if($uc_contents_array[$horiz_pos]["executable"]) {
      $executable_string.=  stripPhp($uc_contents_array[$horiz_pos]["executable"]);
      }
      $horiz_pos++;
      }
      /* Join Executable Strings and Test for syntax errors (if there are anything but 
      assignments, testedby comparing number of = with number of ; */
    
      if(preg_match_all("/;/", $executable_string, $semi_matches) <> preg_match_all("/=/",$executable_string,$equal_matches)) {
    
      return false; //syntax error in string - nunmber of assignments do not equal number of statements;
      }
    
      /* Cycle through array containing executable strings, explode and create 3 arrays containing
      variable, value and type */
    
      $horiz_pos=0;
      while($horiz_pos<$uc_contents_length) {
        //if this element is empty then skip the loop 
        if(!$uc_contents_array[$horiz_pos]["executable"]) { 
        $horiz_pos++;
        continue;
        } //end of if
    
        //strip html tags
        $uc_contents_array[$horiz_pos]["executable"]=trim(strip_tags($uc_contents_array[$horiz_pos]["executable"]));
      
        /* Turn uc_contents_array element into separate assignment strings */
    
         //break assignment_string into an array of separate assignments
        if(!$assignment_array[$horiz_pos]=explode(";",$uc_contents_array[$horiz_pos]["executable"])) {    
      
          return false; // error if no semi-colon in string
        }
              /* Run through assignment array and break into variable, values, and type */
              $i=0;
               while($assignment_array[$horiz_pos][$i]) {
              
                //assign variable to 0 and $value to 1; return if  
                if(!$temp=explode("=",$assignment_array[$horiz_pos][$i])) {  
      
                  return false; //returns false if this string does not contain an assignment
                  
                }
      
              $return_value[$horiz_pos][$i]["variable"]=$temp[0];
              $return_value[$horiz_pos][$i]["value"]=$temp[1];
          
               //maintain quotes for type testing
              $test_string=trim(stripslashes($return_value[$horiz_pos][$i]["value"])); 
           //strip slashes, trim, and get rid of quotes
              $value=trim(preg_replace("/\"/","",stripslashes($return_value[$horiz_pos][$i]["value"]))); 
              /*Derive Types*/
              if(preg_match("/^[0-9]*$/", $test_string)) {
                   $return_value[$horiz_pos][$i]["type"]="integer";
              } elseif ($return_value[$horiz_pos][$i]["value"]=="true" or $value =="false") {
                  $return_value[$horiz_pos][$i]["type"]="boolean";
              }elseif (preg_match("/^\".*\"$/", $test_string)){
                    $return_value[$horiz_pos][$i]["type"]="string";
              }  else {
                  echoErrorMessages("Error: A type could not be determined for variable 
                  $return_value[$horiz_pos][$i][$variable] - Check Syntax in User Configuration File $user_config_file. Only variable 
                  assignments of type String (surrounded by double quotes only), Integers, and Booleans are 
                  supported in that file.");
              
                  return false;
                }
    
              $i++;
            
              } //end of inside while
      
        $horiz_pos++;
    
      } //end of outside while
    
      /*Returns 3 array string containing variable name, value, 
        and  type for each assignment statement */
      
      return $return_value; 
    }    

getComments 

 array getComments (string $big_string, string $left_char, 
                    string $right_char, string $current_pos) 
 

 Starting with the $current_pos position in $big_string, extracts from
 $big_string,  a php comment that begins with $left_char and ends with
 $right_char or the beginning   of a php block. Used when parsing the
 phpcron_userconfig.php

 $big_string - string containing contents of phpcron_userconfig.php
 $left_char  - the beginning character of the comment
 $right_char - the ending character of the comment
  $current_pos - the current position of the parser in $big_string, getComments
                will search from this position forward

 Returns an array containing as the first element, the comment string, and the
 second  element the position after the comment in the $big_string.   contents
 are valid.

    function getComments($bigstring, $left_char, $right_char, $current_pos) {
    
    //gets substring which is delimited by left_char and right_char, starting from $current_pos
    
    global $uc_contents_length;
    $end_of_string= substr($bigstring, $current_pos); //get rest of string from current position to end
    
      if(strstr($end_of_string, $right_char)) {
        if ($right_char=="\n") { //if this is a single line comment
            //position of ending comment not including ending character 
          $last_pos=strpos($bigstring, $right_char, $current_pos);
        } else {
          //position of ending comment including ending character
            $last_pos=strpos($bigstring, $right_char, $current_pos)+strlen($right_char); 
        }
        $substring= substr($bigstring, $current_pos, $last_pos-$current_pos); //get substring to end
      }  elseif (strstr($end_of_string, "?>")) {
         // position of end of php block - but don't include end
        $last_pos=strpos($bigstring, "?>", $current_pos)-1; 
        //get to end of php block
        $substring= substr($bigstring, $current_pos, $last_pos-$current_pos); 
      } else {  //otherwise, return end of string
        $last_pos=$uc_contents_length;
        $substring=$end_of_string;
      }
      $current_pos=$last_pos;
      $current_pos=$last_pos; //update current position
      $return_value = array ($substring, $current_pos);//return substring and current position
    
      return $return_value;
    
    }

getFormElement 

 string getFormElement (string $variable, string $value, string $type,
                   int horiz_pos, int $variable_index) 
 

 Constructs a string containing HTML comprising an appropriate form element
 to pass a value appropriate for $variable. For instance, if the
 variable is a boolean variable, a true/false radio button will
 be constructed, if a string, a text box. Used to construct the
 control panel.
 

 $variable - the string containing the name of the variable being analyzed 
             (extracted    from the phpuserconfig.php)
 $value    - a string containing the name of the value
 $type     -  a string conaining the name of the variable type (e.g., boolean,
              string, etc)   
 $horiz_pos  - the horizontal position where the parser is at in
                parsing the contents of phpuserconfig.php       
 $variable_index - a number used as the second index of the three dimensional 
                array which   holds the assignment info See cpPhpcron
 

 Returns a string containing an appropriate HTML form element for the 
 assignment type.    For instance, if the variable is a boolean variable, a 
 true/false radio button will   be constructed, if a string, a text box. Used 
  to construct the   control panel.
 

See cpPhpcron

    function getFormElement($variable, $value, $type, $horiz_pos, $variable_index) {
    
       $value=trim(preg_replace("/\"/","",stripslashes($value))); //strip slashes, trim, and get rid of quotes    
    
      $box_size=strlen($value);
      if($box_size > 40) {
       $box_size=40;     //size of text box
      }
    
      switch ($type) {
      case "integer":
        
        return "<input type=\"text\" class=\"color\" name=\"assignment_info[$horiz_pos][$variable_index][value]\" value=\"$value\" size=\"$box_size\" onChange=\"isNumber(this)\">";
        break;
    
      case "boolean":
    
    
        if($value=="true") {  
        return "
            <input  type=\"radio\" checked name=\"assignment_info[$horiz_pos][$variable_index][value]\" value=\"true\">On
            <input type=\"radio\" name=\"assignment_info[$horiz_pos][$variable_index][value]\" value=\"false\">Off";
        } else {
        return "
            <input  type=\"radio\"  name=\"assignment_info[$horiz_pos][$variable_index][value]\" value=\"true\">On
            <input type=\"radio\" checked name=\"assignment_info[$horiz_pos][$variable_index][value]\" value=\"false\">Off";
        }
    
        break;
    
      case "string":
    
        return "
              <input type=\"text\" class=\"color\" name=\"assignment_info[$horiz_pos][$variable_index][value]\" value=\"$value\" size=\"$box_size\">";
        break;
      default:
        echoErrorMessages("Error: No Form Found for This Variable $variable- Check Syntax in User Configuration File. Only String, Integers, and
        Booleans are supported.");
        return false;
    
      }
    
    
    }    
    

$uc_contents_array

 A 2 dimensional array constructed of the following:
 $uc_contents_array[$horiz_pos]["executable"] 
        - the non-comment portions of phpcron_userconfig.php    
 $uc_contents_array[$horiz_pos]["ml_comments"]
        - the multi-line comment portions of phpcron_userconfig.php
 $uc_contents_array[$horiz_pos]["sl_comments"] 
        - the single line comment portions of phpcron_userconfig.php

See cpPhpcron, parseUserConfig, rebuildUserCfg

$assignment_info

 A three dimensional array containing variable name, value, and
 type for  each assignment in the $uc_contents_array:
 $assignment_info[$horiz_pos][$i]["variable"], 
 $assignment_info[$horiz_pos],[$i]["type"],  
 $assignment_info[$horiz_pos],[$i]["type"]
 cpPhpcron assigns gets this information from a call
 to getAssignmentInfo in cpPhpcron.

See cpPhpcron, getAssignmentInfo

parseUserConfig

 array parseUserConfig(string $user_config_file, string $left_mlc_ch, 
                     string $right_mlc_ch, string $sc_ch)

 Parses the user configuration file $user_config_file, extracting single 
 line comments,multi-line comments, and command portions of
 $user_config_file

 $user_config_file - the filename of the phpcron_userconfig.php
 $left_mlc_ch - the characters which mark the beginning of a mult-line
               comment  
 $right_mlc_ch - the characters which mark the end of a mult-line
               comment               
 $sc_ch - the characters which mark the beginning of a single-line character

 Returns  an array containing as its first element $uc_contents, a string
 containing the  contents of $user_config_file file and, as its second
 element, $uc_contents_array, a 2 dimensional array which contains the contents
 of the phpcron_userconfig.php

       See $uc_contents_array, cpPhpcron

    function parseUserConfig($user_config_file, $left_mlc_ch, $right_mlc_ch, $sc_ch) {
    /* parse the userconfig file named in $file to separate out mult-line comments surrounded
    by $mlc_left_char and $mlc_right_char and single line comments begun with slc_ch */
    
    global $uc_contents;
    global $uc_contents_length;
    $current_pos=0;
    $horiz_pos=0;
    
        while ($current_pos<$uc_contents_length){
    
           $current_char=substr($uc_contents,$current_pos,strlen($left_mlc_ch));
    
           //if character is a multi-line comment then find to end character of multi-line comment
            if ($current_char==$left_mlc_ch) {
    
            if($uc_contents_array[$horiz_pos]["executable"]) {$horiz_pos++;}
            list($uc_contents_array[$horiz_pos]["ml_comments"], $current_pos)=getComments($uc_contents, $left_mlc_ch,$right_mlc_ch, $current_pos);
    
            $horiz_pos++;
    
          }  elseif($current_char==$sc_ch){
             //increment position for executable
            if($uc_contents_array[$horiz_pos]["executable"]) {$horiz_pos++;}
            list($uc_contents_array[$horiz_pos]["sl_comments"], $current_pos)=getComments($uc_contents, $sc_ch,"\n", $current_pos);
    
            $horiz_pos++;
            
          } else {
            $uc_contents_array[$horiz_pos]["executable"]=stripPhp($uc_contents_array[$horiz_pos]["executable"].substr($current_char,0,1)); //after comments are stripped out, assign all else to this
            }
          $current_pos++;
        }
        $return_value=array ($uc_contents, $uc_contents_array);
        return $return_value;
     }    
    
    

rebuildUserCfg

 string rebuildUserCfg(array $assignment_info, array $uc_contents_array)

 Rebuilds the new phpcron_userconfig.php to be saved given the information 
 submitted by the control panel form.

 $assignment_info - a three dimensional array containing the data submitted 
 by the control panel form
 $uc_contents_array - a 2 dimensional array containing the current contents of the
                     phpcron_userconfig.php such that:
                     $uc_contents_array
 

 A string containing the new contents of the phpcron_userconfig.php after
 editing by the control panel form. This string is meant to be saved
 as the new phpcron_userconfig file.

See cpPhpcron

    function rebuildUserCfg($assignment_info, $uc_contents_array) { //Print out Contents of File in Order
      
      /* This function rebuilds the user_config_file using the new information from $assignment_info 
      submitted by the user. */
      global $uc_contents_length;
      $horiz_pos=0;
    
        while($horiz_pos<$uc_contents_length) {
    
        $i=0;
    
    
        while($assignment_info[$horiz_pos][$i]["variable"] ) {
    
          if ($assignment_info[$horiz_pos][$i]["type"]=="string") { //add quotes for a string
              $assignment_info[$horiz_pos][$i]["value"]="\"".$assignment_info[$horiz_pos][$i]["value"]."\"";
          }
    
          if($i==0) {
          /* After first time add additional elements (don't replace - otherwise won't get
          additional assignments on same line) */
            $uc_contents_array[$horiz_pos]["executable"]=$assignment_info[$horiz_pos][$i]["variable"].
                                        "=".$assignment_info[$horiz_pos][$i]["value"].";";
    
          }else {
            $uc_contents_array[$horiz_pos]["executable"].=$assignment_info[$horiz_pos][$i]["variable"].
                                        "=".$assignment_info[$horiz_pos][$i]["value"].";";
          }
          /* For Debugging:
          echo "Horiz Pos: $horiz_pos Index: $i<br>";
          echo "Assignment Info Variable:".$assignment_info[$horiz_pos][$i]["variable"]."<br>";
          echo "Contents:".$uc_contents_array[$horiz_pos]["executable"]."<br>";
          echo "SL Comments:".$uc_contents_array[$horiz_pos]["sl_comments"]."<br>";
          echo "ML Comments:".$uc_contents_array[$horiz_pos]["ml_comments"]."<br>";
          */
    
          $i++;
        }
    
        if($uc_contents_array[$horiz_pos+1]["sl_comments"]) {
          $plus1=$horiz_pos+1;
          /*For Debugging
          echo "Exec Contents $horiz_pos:".$uc_contents_array[$horiz_pos]["executable"]."<br>";
          echo "Exec Contents:".$plus1.$uc_contents_array[$horiz_pos+1]["executable"]."<br>";
          echo "sl comments again:".$plus1.$uc_contents_array[$horiz_pos+1]["sl_comments"];
          */
    
          /*only add tab if there are commands on same line (the executable element 
          holds a word character)*/
          if (preg_match("/\w/",$uc_contents_array[$horiz_pos]["executable"])){ 
          
          $uc_contents_array[$horiz_pos+1]["sl_comments"]="\t".$uc_contents_array[$horiz_pos+1]["sl_comments"]."\n";
          } else {    
    
          $uc_contents_array[$horiz_pos+1]["sl_comments"]=$uc_contents_array[$horiz_pos+1]["sl_comments"]."\n";
          
          }
        }
      
        if($uc_contents_array[$horiz_pos]["ml_comments"]) {
          $uc_contents_array[$horiz_pos]["ml_comments"]=$uc_contents_array[$horiz_pos]["ml_comments"]."\n";
        }
        $new_file_contents.=$uc_contents_array[$horiz_pos]["sl_comments"].$uc_contents_array[$horiz_pos]["ml_comments"].$uc_contents_array[$horiz_pos]["executable"];
        $horiz_pos++;
      
        }
        $new_file_contents="\r\n<?php\r\n\r\n".trim(stripslashes($new_file_contents))."\r\n\r\n?>"; //add php tags
        return $new_file_contents;
      }    
    

stripPhp

 string stripPhp(string $phpstring)

 Strips $phpstring of the <?php and the ?> tags

 A string containing a php script.

 The contents of the php script without the beginning and  ending php
 tags.

    function stripPhp($phpstring) {
       $phpstring=preg_replace("/(<\?php)|(\?>)/","",$phpstring); 
      return $phpstring;
    }    

tabTopComments

 string tabTopComments(string $top_line_comments, int $number_of_top_comments)

 Creates a row of a table containing a textarea containing the top comments of
 the phpcrontab.conf. Comprises a part of the form which edits the
 phpcrontab.conf file.

 $top_line_comments - a string created in editTabByForm containing  all of the
                      comments at the top of the phpcrontab.conf file 
 $number_of_top_comments - number of lines of top comments in phpcrontab.conf

 A string containing the HTML for producing the table row containing the 
 textarea holding the top comments of phpcrontab.conf 

See editTabByForm

    function tabTopComments($top_line_comments, $number_of_top_comments) {
    global $edit_table_title;
     return " <tr>
                 <td align=\"center\" colspan=\"7\">
                 <textarea name=\"top_line_comments\" cols=\"80\" wrap=\"off\" rows=\"$number_of_top_comments\">$top_line_comments                      
                 </textarea>
                </td>
              </tr>
               <tr align=\"center\" style=$edit_table_title>
           
                     <td style=$edit_table_title>
                          Min<br>(0-59)
                    </td>
                     <td style=$edit_table_title>
                          Hour<br>(0-23)
                    </td>
                     <td style=$edit_table_title>
                          Month<br>Day<br>(1-31)
                    </td>
                     <td style=$edit_table_title>
                          Month<br>(1-12)
                    </td>
                     <td style=$edit_table_title>
                          Week<br>Day<br>(0-6)
                    </td>                                            
                    <td style=$edit_table_title>
                        Commands 
                    </td>
                    <td style=$edit_table_title>
                      Comments
                    </td>
                </tr>
                <tr>
                ";
    }    

phpcron_commonlib.php

 This is a collection of functions used by both
 phpcron.php and phpcron_admin.php.

David C. Druffner
 ddruff@gemini1consulting.com

 COPYRIGHT 2001 (C) David C. Druffner
 ddruff@gemini1consulting.com
 This script is released under a modified BSD License.
 See php phpcron.php -license and LICENSE.txt in download package 
 for full license details

Bugs can be reported via the online manual:
 http://www.gemini1consulting.com/tekhelp/online_manuals/phpcron/

This is a collection of functions used by both
 phpcron.php and phpcron_admin.php.

 The current manual for Phpcron and Phpcron Admin is located at 
 http://www.gemini1consulting.com/tekhelp/online_manuals/phpcron/
 The Home Page is:
 http://phpcron.sourceforge.net/
 Download from the Source Forge Project Page:
 http://www.sourceforge.net/projects/phpcron/
 In-Line Documentation:
 A slightly modified version of ROBODOC is used to
 generate documentation for   this code. I have modified the headers.c file in
 the Robodoc source code to  et  the variable header_markers to equal only
 /*ROBODOC* as the start of a  header  marker - this avoids confusion with other
 strings and comments in PHP  code.   Robodoc is available at
 http://www.xs4all.nl/~rfsber/Robo/robodoc.html

$license

 Variable containing text of license 
/
license="
hpcron, Phpcron Admin, and all associated and packaged scripts carry the
ollowing license:
OPYRIGHT (C) 2001 David Druffner
druff@gemini1consulting.com
edistribution and use in source and binary forms, with or without
odification, are permitted provided that the following conditions are met: 
1.Redistributions of source code must retain the above copyright notice, this
ist of conditions and the following disclaimer.  
2.Redistributions in binary form must reproduce the above copyright notice,
his list of conditions and the following disclaimer in the documentation
nd/or other materials provided with the distribution. 
3.The name of the author may not be used to endorse or promote products
erived from this software without specific prior written permission.  
HIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
ARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
ERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
VENT SHALL THE AUTHOR, ANY DISTRIBUTOR, OR ANY DOWNLOAD HOSTING COMPANY BE
IABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
ONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
UBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
NTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
ONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
RISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
OSSIBILITY OF SUCH DAMAGE.   
;
ROBODOC_END*/

$phpcron_file 

 Variable containing path to phpcron.php 

$phpcron_psinfo_file 

 Variable containing path and filename of file
 containing information for the process
 running the phpcron.php script.

$phpcron_venabled_file 

 If this file exists, then phpcron.php in non-daemon mode will run the
 scheduled commands in phpcrontab.conf 

$phpcron_psinfo_file - path and filename of file the existence of 
 which causes phpcron.php to shut down
OBODOC_END*/
 
phpcron_off=$phpcron_directory."phpcron_off"; 
*ROBODOC*d phpcron_commonlib/MS_WINDOWS
 

MS_WINDOWS - constant - true if OS is Windows, false if not

 Used to check if OS is Windows or Unix.

$viewed_by_browser - true if script is read by browser, false if console

 True if script is read by browser, false if executed on the
 command line. Set automatically by script on each execution 
 by reading whether $SERVER_PROTOCOL or $HTTP_USER_AGENT is set.

I'm sure this won't work in all cases, but was the best solution
 I could come up with. Some web servers might not give out these
 variables and the script would interpret that to mean that
 it was being executed on the command line. The main result of this
 in phpcron.php is that the HTML tags would be stripped from all output
 (probably leading to a blank screen)and a built-in safeguard
 against going into daemon mode would be disabled (but there
 are other safeguards that should still prevent this).

If phpcron.php is executed in a browser in daemon mode than an httpd
 process would be spawned that would only be able to be killed by 
 root (or by a self-kill if it detects a phpcron_off file in
 existence). This is a BAD THING as it could lead to server overload.
 Thus the daemon mode is shut off if a browser is detected. In addition,
 phpcron.php has certain self-checks to kill itself if there
 is another phpcron.php process running in daemon mode. See
 the function isOtherPhpcrond.

     if ($SERVER_PROTOCOL or $HTTP_USER_AGENT) {    
    
     $viewed_by_browser=true;
      $slow_debug_scroll=0; 
      } else {
        $viewed_by_browser=false;
      }    

checkPhpVersion - formats string to conform to HTML/XML standards

 boolean checkPhpVersion(string $required_version, string $warning_string, 
 boolean $quit) 

 Verifies that the PHP version running on the Web Server is at least
 equal to the version required by the script.

 $a, $b, $c   -strings containing minimum PHP version needed by the Script,
                e.g., 3.0.0. would be 3,0,0
 $warning_string    -optional parameter to be output to the user if fails 
                      version check
 $quit  - optional parameter which if true will force the 
          cript to end 

 Returns true if version of PHP is at least the minimum, false otherwise

    function checkPhpVersion ($version_required, $warning_string="/", $quit=false) {
    
    
    $version_installed=phpversion();
    /*Break Up $version_required string by decimal point*/
    $version_required=explode(".", $version_required);
    
    if (!ereg( "[[$version_required[0]-9]\.[$version_required[1]-9]\.[$version_required[2]-9].*", $version_installed )){
    
     if ($warning_string !="/") {
        sendOutput($warning_string);
      }
      if ($quit) {
      
      exit;
      }
    
      return false;
    exit;
    } else {
    
    return true;
    }
    
    
    
    }    

sendOutput - handles output depending on environment and global variables

 void sendOutput(string $output, boolean $suppress_override)

 Handles all output for phpcron.php. If a command line suppression switch has
 been turned on,  then the output is not echoed, unless the $suppress_override
 parameter is set to true (default is false) - usually done for critical
 errors.  Also, if the $redirect_output flag is true, the output will not be
 echoed  to the screen, but to the $redirect_file.  If the output is being
 sent to the browser, the output is left alone,  but if is being printed to
 the console as the output from a command line  script, than all html is
 stripped.

 $output   - string containing output being echoed
 $suppress_override - optional parameter, if set the echo will occur whether
 or not the global output suppression has been turned
 on (see $suppress_output)

Relies on values in global variables $viewed_by_browser, $suppress_output, 
 $redirect_output, and $redirect_file

    function sendOutput($output_message, $suppress_override=false) {
    
    global $suppress_output;
    
    global $viewed_by_browser;
    global $redirect_output;
    global $redirect_file;
    
          if(!$suppress_output or $suppress_override) {
    
    
              //display message
              if (!$viewed_by_browser) {
                $output_message=strip_tags($output_message);
              }
    
              if ($redirect_output) {
    
              $save_results=appendToFile($output_message, $redirect_file);
    
              if (!$save_results[0]) {
                  //echo error messages
                  echo "Error: Cannot Append to File $redirect_file.".
                                                     "Check filename and permissions.\r\n";
              }
    
              } else {
    
              echo $output_message;
    
              }
          }
    }    

getProcessInfo() - formats string to conform to HTML/XML standards

 $string getProcessInfo(void) 

 When called returns information for the process running the PHP script
 (Unix only). Relies on a ps ef system call.

 Returns a three element string array:
 $process_info["all"] - all the proces info returned by ps ef
 $process_info["id"] - gives the $pid of the process
 $process_info["owner"] - gives the owner of the process

    function getProcessInfo () {
    //get process info of current process
      global $pid;
        //get owner of script process
        if (!MS_WINDOWS) { //show pid info if not in windows
        
          exec("ps hefp $pid u", $output, $return_value);
          $output=implode(" ", $output);
    
          // get owner of process and put in $matches[1];
    
    
          preg_match("/(^[A-z0-9A-Z]*\b).*$/",$output,$matches);
          $process_info["all"]=$matches[0];
          $process_info["owner"]=$matches[1];
          $process_info["id"]=$pid;
    
    
        return $process_info;
       }
       //return nothing if windows/dos
    }    

isPathbad

 boolean isPathbad(string $path_name, 
 [boolean $check_filename, [$file_existing=false)]);  

 Checks whether directory and/or filename exists and is readable/writeable 
 (filename checked only if $check_filename is true, the default is false).
 Can be used both for dos and unix paths.

 $path_name - string containing path name.
 
 $check_filename -
 
 Optional boolean parameter. Default is false. If true,
 then  will do check on filename as well as directory and will return   an
 error message if no file name was include_onced in the path.       
 
 $file_existing         - 
 optional boolean parameter (requires $check_filname to be
 set) that tells whether or not the file is existing. 

 If there are errors in testing the path, it returns a double array 
 containing error messges in the format of $file_errors["dir"] and
 $file_errors["file"]. If there are no errors, it returns false.
 
 The double array can be extracted using the list command like this: 
 
 if($path_errors=isPathbad($path_name)){
 
 while ( list($file_or_dir, $error_messages) = each($path_errors)) {
 
 while (list($each_message)  = each($error_messages)) {
 echo $path_errors[$file_or_dir][$each_message]."<br>";  
 }
 }
 }
 

 $path_errors=isPathBad("/test/test.txt", true);  
 if ($path_errors["directory"] or $path_errors["file"]["write"]) { 
 $output="Error:  Cannot write to test/text.txt. The following errors were
 encountered.:<br>\r\n";  
 while ( list($file_or_dir, $error_messages) = each($path_errors)) 
 {  
 while (list($each_message)  = each($error_messages)) 
 {
 $output.= $path_errors[$file_or_dir][$each_message]."<br>\r\n";
 }
 }
 echo $output;
 
 
 } 

    function isPathbad($path_name, $check_filename=false, $file_existing=false) {                                                                                                                                                                                                           
                                                                                                                                                            
    
      $dir_name=dirname($path_name)."/";
      $base_file_name=basename($path_name);
      $basename_stripped=formatPath($base_file_name);
      $dir_stripped=formatPath($dir_name);
      $pathname_stripped=formatPath($path_name);
    
    
        //Check Directory
    
       if(!file_exists($dir_name)){
         $path_errors["directory"]["exist"]="Error: Directory $dir_stripped does not exist. Please Create.<br>";
       }
    
         elseif(!is_writeable($dir_name)){
    
          $path_errors["directory"]["write"]="Error: Directory $dir_stripped cannot be written to. Check permissions.<br>";
       }
       elseif(!is_readable($dir_name)){
         $path_errors["directory"]["read"]="Error: Directory $dir_stripped cannot be read from. Check permissions.<br>";
       }
    
    
       //Check File Name
    
       if ($check_filename and !$base_file_name) { //if file name is required but not suppplied, print error
           $path_errors["file"]["empty"]="Error: $pathname_stripped is an invalid path. No file name was supplied.<br>";
          }
    
       if ($check_filename and $base_file_name) {
    
          //check filename format
    
          if((MS_WINDOWS and !preg_match("/^[-\.a-zA-Z0-9\s_\^\$~!#&\}\{\(\)@'`]+?$/",$base_file_name))or (!MS_WINDOWS and !preg_match("/^.[^\*\?&`'\"\/\>\)\(\]\[\<(\)]+?$/",$base_file_name))) { //check for proper characters in names
    
                  $path_errors["file"]["name"] ="\tError: File $pathname_stripped  contains invalid characters in file name.\r\n<br>";
    
           }
    
          if ($file_existing) {
    
             if(!file_exists($path_name)){
                   $path_errors["file"]["exist"]="Error: File $pathname_stripped does not exist.<br>";
             } elseif(!is_file($path_name)){
                   $path_errors["file"]["regular"]="Error: Invalid filename. $basename_stripped is a directory.<br>";
    
             }   elseif(!is_writeable($path_name)){
                      $path_errors["file"]["write"]="Error: File $pathname_stripped cannot be written to. Check permissions on file.<br>";
             }   elseif(!is_readable($path_name)){
                   $path_errors["file"]["read"]="Error: File $pathname_stripped is not readable. Check permissions.<br>";
             }
    
        }
    
    
    
    
      }
        return $path_errors;
    
    }    

formatPath

 $string formatPath(string $path_name);  

 Takes a string containing a path name and makes it conform to the operating
 specific  path format for readability, e.g, for dos "c:/test/test.txt" ->  
 "c:\test\test.txt".    This is meant to be used as a filter before the string
 is   output to the screen so it becomes "human readable". This function 
 assumes that the   path name is in unix format to begin with, so if used
 under a unix OS the string   returned for "c/test/test.txt" would be the same
 as the input. In addition, this function also adds the current directory to
 any path that   lacks an absolutte directory, e.g,"test.txt" would become
 /home/httpd/html/test.txt   if the script was being executed in
 /home/httpd/html/. 

 Used as a cross-OS function to format the path name before it is echoed
 to the user. No matter what the Operating System, the path will be readable
 to the user when it is echoed to the screen.

 $path_name - string containing path name. 

 Returns a string containing the $path_name in os appropriate format. 

CURRENT_DIRECTORY is a constant which must be defined in the 
 calling script as follows:
 define ("CURRENT_DIRECTORY",realpath(dirname(__FILE__)));                

                
    function formatPath($path_name) {
    
    //Note for this to work you must define CURRENT_DIRECTORY as follows in main script:
    //define ("CURRENT_DIRECTORY",realpath(dirname(__FILE__)));
                                                                     
    
    /* Give a Directory Name if using same directory of script and none is otherwise specified*/
    if (dirname($path_name)==".") {
      $path_name=CURRENT_DIRECTORY."/".basename($path_name);
    
    }
                                     
    
      if(MS_WINDOWS) {
      $path_name=stripslashes($path_name);
    
      $path_name=preg_replace("/\//","\\",$path_name);  //get rid of any forward slashes
      }
                                     
       return $path_name;
      
    }    
    

is_email

 boolean is_email(string $email_address);  

 Validates an email address

 $email_address                 - string containing an email address

 Returns a true if email is in correct format, false if not 

None known, but since domain formats are constantly changing, there
 may be some obscure domains that this function will see as incorrect
 emails and not accept.           

    function is_email($email_address) {     
    
        if(!preg_match("/[\w\-][^@]+\@[\w\-][^@]+\.[\w\-][^@]+/",$email_address)) {
    
              return false;
        }  else {
            return true;
        }
    }    

appendToFile

 string array appendToFile(string $new_file_contents, string $file_name);

 Appends $new_file_contents to file named by $file_name, if $file_name 
 does not exist, it will be created.

 $new_file_contents  -  string containing text to be added to file
 $file_name          -  path and filename of file to be appended to

 Returns a string array containing error messages; the first element of the
 array  contains a success message, if it was unsuccessful, the first element 
 is empty (false) and the remaining elements (1-last) contain error  messages.

 Example 1 - Short form:
 
 $append_results=appendToFile($clear_message,$log_result_file);
 $append_results[0]=""; //does not echo success message, but you could
 if(trim($append_results)) {
 $error_messages.=implode(" ",$append_results);
 echo $error_messages;
 }
 
 Example 2 - Long form:
 
 $append_results=appendToFile($contents, $filename);
 if($append_results[0]) { //this would be successful save        
 //this collects the success message 
 $error_messages.=$append_results[0]; 
 } else { //append so collect error messages in elements 1 - last
 $index=1;
 while($append_results[$index]) {
 $error_messages.=$append_results[$index];
 $index++;
 }
 }
 echo $error_messages;  

Relies on these other functions:
 /phpcron_commonlib/formatPath                                   
 /phpcron_commonlib/isPathbad 

    function appendToFile($new_file_contents, $file_name)   {
    
    
    
      if(!trim($file_name)) {
    
          $save_results[1]="Error: No File Name Given";
          return $save_results;
      }
    
       $filename_stripped=formatPath($file_name);
    
    
           $path_errors=isPathbad($file_name, true, true);
          //check if directory is valid and file name is legal
          if (!$path_errors["directory"] and !$path_errors["file"]["name"]) {
    
           /* Open for reading and writing, place file pointer at end of file (append)
            , if does not exist attempt to create it */
    
              $fp = fopen( $file_name,"a+");
    
              if (!$fp) {
                   $open_error="Error: File $filename_stripped Cannot Be opened. Check Permissions.<br>\n";
                 } else {
                 fwrite($fp,$new_file_contents);
                 fclose ($fp);
              $save_results[0]="<strong>File $filename_stripped has been successfully saved.<strong><br>";
              }
    
           } else {
    
                   $i=1;
                  $save_results[1]="Error: Cannot save file $filename_stripped.<br>";
                     while ( list($file_or_dir, $error_messages) = each($path_errors)) {
    
                      while (list($each_message)  = each($error_messages)) {
    
                        $save_results[$i].= $path_errors[$file_or_dir][$each_message];
                        $i++;
                      }
                  }
    
    
    
    
        }
    
        if ($open_error) {
    
            $save_results[$i]=$open_error;
        }
    
        return $save_results;
     }     

saveFile

 string array saveFile(string $file_contents, string $file_name);

 Saves $file_contents to file named by $file_name. If $file_name already
 exists it will be overwritten, if not, it will be created.

 $file_contents  -  string containing text to be saved
 $file_name      -  path and filename of file to be saved

 Returns a string array containing error messages; the first element of the
 array  contains a success message (or false if it failed). If it was
 unsuccessful, the remaining elements (1-last) contain error  messages. 

 
 Example 1 - Short form:
 
 $save_results=saveFile($clear_message,$log_result_file);
 $save_results[0]=""; //does not echo success message, but you could
 if(trim($save_results)) {
 $error_messages.=implode(" ",$save_results);
 echo $error_messages;
 }
 
 Example 2 - Long form:
 
 $save_results=saveFile($contents, $filename);
 
 if($save_results[0]) { //this would be successful save        
 //this collects the success message 
 $error_messages.=$save_results[0]; 
 } else { //save so collect error messages in elements 1 - last
 $index=1;
 while($save_results[$index]) {
 $error_messages.=$save_results[$index];
 $index++;
 }
 }
 echo $error_messages;  
 NOTES:
 This is essentially the same as the appendToFile function, but the pointer is
 at the beginning, not the end of the file. It relies on these other
 functions:
 
 formatPath                                      
 isPathbad 

    function saveFile($new_file_contents, $file_name)   {
    
       /* Save File over file_name (overwrites);
      returns an array of $save_results; $save_results[0] is true on success, false on failure
      and failure messages are in remaining elements of array */
    
          $new_file_contents=trim(stripslashes($new_file_contents));   //strip slashes from paths
          $filename_stripped=formatPath($file_name);
          $path_errors=isPathbad($file_name, true, false);
    
          if (!isset($path_errors)) { //check if directory is valid and file name is legal
              $fp = @fopen( $file_name,"w"); //open for writing, place file pointer at beginning of file, if does not exist attempt to create it
                 if (!$fp) {
                   $open_error="Error: File $filename_stripped Cannot Be opened. Check Permissions.<br>\n";
                 } else {
    
                 fwrite($fp,$new_file_contents);
                 fclose ($fp);
                 $save_results[0]="<strong>File $filename_stripped has been successfully saved.<strong><br>";
            
                 }
          $i=1;   
      
          } else {
    
              $i=2;
             $save_results[1]="Error: Cannot save file $filename_stripped.<br>";
            
              while ( list($file_or_dir, $error_message) = each($path_errors)) {
    
                while (list($each_message)  = each($error_message)) {
    
                  $save_results[$i].= $path_errors[$file_or_dir][$each_message];
                  $i++;
                }
            }
    
    
        }
        
        if ($open_error) {
    
            $save_results[$i]=$open_error;
        }
        
        return $save_results;
     
     }    

deleteFile - deletes file in unix and dos

 boolean deleteFile(string $file_name)

 Deletes file $filename in dos or unix

 $file_name - name of file to be deleted

 Returns true on success, false on failure

Must define MS_WINDOWS constant like so in the calling script:
 
 if(preg_match("/WIN/", PHP_OS)) {
 define("MS_WINDOWS",true);
 } else {
 define("MS_WINDOWS",false);
 }

     function deleteFile($file_name) {
    
    
     if (!file_exists($file_name)) {
      return true; //if file doesn't exist than don't worry about it
     }
     clearstatcache(); //clear cache since will be checking same file again
     $path_errors=isPathBad($file_name, true, true);
    
     if ( !$path_errors["directory"]["write"] and !$path_errors["file"])  {
    
       if(MS_WINDOWS) {
       $file_name=formatPath($file_name);
    
       exec("del $file_name");
    
       } else {
    
        unlink($file_name);
    
       }
       return true;
     } else {
    
    
     return false;    //return false if errors - can't write to path
     }
    }    

isInteger - tests whether a string contains integers only

 boolean isInteger(string $integer_string)

 Checks whether $integer_string contains only integers

 $integer_string - string to be tested

 Returns true on success, false on failure

    function isInteger ($integer_string) {
      /* It's false if the string is null */
      if (!isset($integer_string)) {
        return false;
      }
      $i=0;
      $length=strlen($integer_string);
      while($i<$length) {
      $ch=substr($integer_string,$i,1);
      if (ord($ch) < 48 or ord($ch) > 57) { //this tests 0 through 9
        return false;
      }
      $i++;
      }
      return true;
    
    }    

isIntegerInRange - tests whether an integer is within a named range

 boolean isIntegerInRange(string $integer_string, integer $low, integer
 $high)

 Checks whether $integer_string contains an integer equal to or between the
 values  of $low and $high.

 $integer_string - string to be tested
 $low           - integer at low end of range
 $high  - integer at high end of range

 Returns true if tested string is outside of the $low and $high range, 
 false otherwise. Values that equal $low and $high will return true. 

    function isIntegerInRange ($integer_string, $low, $high) {
    /* range is inclusive, so includes high and low values*/
    
        if  (!isInteger($integer_string)) {
    
        return false;
        }
    
        $myinteger=intval($integer_string);
        if (($myinteger < $low) or ($myinteger > $high)) {
        return false;
        } else {
        return true;
        }
    }    

mailAttachment - emails a file as a mime encoded attachment

 boolean mailAttachment( string $email_address, string $subject, 
 string $body, string $attachment, string $mimetype) 

 Mime encodes a file and emails it as an attachment. 

 $email_address - the "To" email address
 $subject - Subject of email
 $body  - message to be included in the body of the email
 $attachment  - name of file to be attached
 $mimetype - mimetype of file to be encoded, e.g, "text/english"

 Returns an error message on failure. See the example below.

 if($mailserver_error=mailAttachment
 ($admin_email_address, $subject, $body, $attachment, $mimetype)) {
 $error_messages.="Error: Unable to Email Log File:<br>\r\n".
 $mailserver_error;
 } else {          //it succeeded
 $error_messages.="Emailed Log File to $admin_email_address";
 }
 echo $error_messages;

    function mailAttachment( $email_address, $subject, $body, $attachment, $mimetype)  {
    
    $boundary = md5(uniqid(time()));
    
    
    //MIME MUST be first character in headers - no spaces  or carriage returns
    $headers ="MIME-Version: 1.0
    Content-type: multipart/mixed;boundary=\"$boundary\"
    
    Multipart MIME message
    \r\n";
    
    $messagebody = "
    --$boundary
    Content-type: text/plain;charset=us-ascii
    Content-transfer-encoding: 8bit
    
    ".$body
    ."\r\n";
    
    $fp = fopen($attachment, "r");
    $attached_file = fread($fp, filesize($attachment));
    $attached_file = chunk_split(base64_encode($attached_file));
    $file_name = basename($attachment);
    
    $messagebody .= "
    --$boundary
    Content-type: ".$mimetype."; name=\"$file_name\"
    Content-transfer-encoding: base64
    Content-Disposition: attachment; filename=\"$file_name\"
    
    ".$attached_file
    ."
    
    ";
    
    
         // End of mail
         $messagebody .= "--$boundary--";
    
         $mail_result=@mail($email_address, $subject, $messagebody, $headers);
    
         if(!$mail_result) {
         $error_message="Mail message could not be sent.\r\n<br>
          Make sure you have a mail server installed and running.\r\n<br>";
          return $error_message; //returns true if unable to mail
         }
    }    

isOtherPhpcrond - checks to see if another phpcrond deamon process is running

 boolean  isOtherPhpcrond(void)

 Does a triple check (unix) or single check (dos) to see if another 
 phpcrond daemon is running. 
 
 In unix and dos it checks to see if the phpcron_psinfo_file exists in the 
 current directory of the script. 
 
 Under unix,the function will also 1) check the /tmp directory since  
 phpcrond will also generate a file there in unix if the directory exists  
 and is writeable, and 2) grep the ps command to see if it can detect an  
 instance of phpcron.

 It is vital that only one phpcrond daemon run at the same time - especially
 on a box  that is being used by many users (e.g., a virtual hosting box).
 This function  tries its best to detect whether such other instance is
 running. 

 Returns true if another instance of phpcrond is detected, false if not. 

Since it relies on a specific use of the ps, the ps check may not work under 
 some versions of Unix. 

    function isOtherPhpcrond() {
    
    /*Triple check done initially in phpcron.php to see if there is another instance running */
    
    global $phpcron_psinfo_file;
    $other_instance=false;
    $temp_path="$TEMP_DIR/".basename($phpcron_psinfo_file);
    
    if(file_exists($phpcron_psinfo_file)) {
        //Check to see if another instance is running
    
          deleteFile($phpcron_psinfo_file);
          sleep(1); //wait for phpcron to create again if there is another instance
          clearstatcache(); //clear cache since will be checking same file again
          if (file_exists($phpcron_psinfo_file)) {
          $other_instance=true;
    
    
          }
    
    }
    if(is_writeable("$TEMP_DIR/") and file_exists("$TEMP_DIR/".basename($phpcron_psinfo_file))) {
    
    
        //Check temp directory to see if a file ps info file is there
    
          deleteFile($temp_path);
    
          
          sleep(1); //wait for phpcron to create again if there is another instance
          clearstatcache(); //clear cache since will be checking same file again
          if (file_exists("$TEMP_DIR/".basename($phpcron_psinfo_file))) {
          $other_instance=true;
    
          }
    
    }
    
    
    //check in the tmp directory
    
    exec("ps ef | grep '^*phpcron.php*daemon.*$'",$output,$result_code);
    $number_of_instances=count($output);
    if($number_of_instances>1) {
    
    $other_instance=true;
    
    }
    
    return $other_instance;
    
    }    

stopOtherPhpcron

 boolean stopOtherPhpcron(void)

 Stops all Phpcron daemons that may be running. Does so by saving a  "stop"
 file ($phpcron_off) in the phpcron directory and in the $TEMP_DIR which when
 detected by phpcron.php will stop that process. 

 True on success, false on failure.

    function stopOtherPhpcron(){
    
    /* Stops all phpcron daemons gracefully. */
    global $phpcron_off;
    
       
        $save_errors=saveFile("PHPCRON Stopped",$phpcron_off);
        
        $save_errors=implode("<br>",$save_errors);
       // echo "<br>".$save_errors;
     
        saveFile("PHPCRON Stopped","$TEMP_DIR/".basename($phpcron_off));
    
        sleep (1); //wait for it to stop
       
        return !isOtherPhpcrond(); //checks to see if any other phpcrond is still running and returns true/false
    
    }    

parseCronTimeParams

 boolean parseCronTimeParams(string $time_param_string)

 Parses phpcrontab parameter string (minute, hour, date of month, day of week
 in traditional unix crontab format) and returns true or false whether current
 time matches. Implements ranges and alternate values and you can mix and
 match. E.g., you can do this: 18,20-25,20 1-2 * * *  

 True if matches current time, false on failure.

    function parseCronTimeParams($time_param_string) {
    
    /* Parses phpcrontab parameter string (minute, hour, date of month, day of
    week in traditional unix crontab format) and returns true or false whether
    current time matches. Implements ranges and alternate values and you can mix
    and match. E.g., you can do this: 18,20-25,20 1-2 * * *       */
    
    
    /*Separate string by spaces, if it does not equal 5 then can't parse */
    
    if (count($tparams=explode(" ",$time_param_string)) <> 5) {
    return false;
    }
    
    /* Get Current time in same format as $time_param_string */
    $timestamp= trim(date("i H d m w"));
    
    /*Put individual vales of time stamp into sequential array */
    $timestamp=explode(" ",$timestamp);
    
    /*Main Loop - Cycle through each time parameter and match
    to actual time */
    
    $i=0;
    while (isset($tparams[$i])) {
    
    
    /***********Check for Asterisk************/
    
    if (preg_match("/^\*$/",$tparams[$i])) {
    
    $i++;
    continue 1; /*Go to Next Value*/
    } elseif (preg_match("/^".$timestamp[$i]."$/",$tparams[$i])) {
    
    /***********Check for Exact Match***********/
    
    $i++;
    continue 1; /*Go to Next Value*/
                                //a #    or    a range        comma optional [repeat one or more times to end]
    } elseif (preg_match("/^(([0-9]{1,2}|[0-9]{1,2}-[0-9]{1,2}),?)+$/",$tparams[$i])) {
    
    /**********Check for Comma and Ranges (can be mixed)*************/
    
    
    /*Separate Out Values Separated by Commas*/
    $alternate_values=explode(",",$tparams[$i]);
    $i_av=0;
    
    /*Cycle through each value to compare with corresponding time unit*/
    
    while (isset($alternate_values[$i_av])) {
    
    /* Check for individual number match */
    if ($alternate_values[$i_av]==$timestamp[$i]) {
    
     /*Continue with outer while loop since we have a match
    and try next value */
    $i++;
    
    continue 2;
    
    }
    
    /*Check if this alternate value is also a range*/
    
    if (preg_match("/^([0-9]{1,2}-[0-9]{1,2})$/",$alternate_values[$i_av])) {
    
    /*If so, check the range */
    
    /*Separate Out Low and High of Range Separated by Hyphen*/
    $range=explode("-",$alternate_values[$i_av]);
    
    if (isIntegerInRange($timestamp[$i], $range[0], $range[1])) {
    /* Continue with outer loop if it's within range */
    $i++;
    continue 2; 
    }
    
    } 
    
    
    $i_av++; /*Increment $alternate_values[$i_av] */
    }
    
    return false; //if it makes it this far there has been no matches
    
    } else {
    /* If doesn't match any of the patterns it's non-conforming */
    return false; 
    }
    
    $i++; /* Increment tparams[$i] value */
    }
    return true;
    
    }    

 boolean isCronTimeParamsBad(string $time_param_string, int $command_number)

 Validates phpcrontab parameter string (minute, hour, date of month, day of
 week in traditional unix crontab format) and returns error messages (true) if
 string is bad or false if ok.  

 string $time_param_string - a parameter string extracted from the 
                            phpcrontab.conf file (e.g., * 2-4,7,12 * * 3)
 int $command_number - line number in phpcrontrab.conf containing parameter 
                      string

 Error messages (true) if string is bad or false if ok.  

    function isCronTimeParamsBad($time_param_string, $command_number) {
    
    
    /*Separate string by spaces, if it does not equal 5 then can't parse */
    
    if (count($tparams=explode(" ",trim($time_param_string))) <> 5) {
    $error_messages.="Error in Command #$command_number: Parameter String Must Have 5 Parameters.<br>";
    
    return $error_messages;
    }
    
    /* Set Correct high and low for each parameter */
    
     $correct_range[0]["low"] = 0;
     $correct_range[0]["high"] = 59;
     $correct_range[0]["unit"] = "Minutes";
     $correct_range[1]["low"] = 0;
     $correct_range[1]["high"] = 23;
     $correct_range[1]["unit"] = "Hour";
     $correct_range[2]["low"] = 1;
     $correct_range[2]["high"] = 31;
     $correct_range[2]["unit"] = "Day of Month";
     $correct_range[3]["low"] = 1;
     $correct_range[3]["high"] =12;
     $correct_range[3]["unit"] = "Month";
     $correct_range[4]["low"] = 0;
     $correct_range[4]["high"] = 6;
     $correct_range[4]["unit"] = "Day of Week";
      
     
    /*Main Loop - Cycle through each time parameter and validate*/
    
    $i=0;
    while (isset($tparams[$i])) {
    
    
    /***********Check for Asterisk************/
    
    if (preg_match("/^\*$/",$tparams[$i])) {
    
    $i++;
    continue 1; /*Go to Next Value*/
    } elseif (preg_match("/^[0-9]+$/",trim($tparams[$i]))) {
    
    /***********Check for Single Number***********/
    if (isIntegerInRange($tparams[$i], $correct_range[$i]["low"], $correct_range[$i]["high"])) {
    /* Continue with loop if it's within range */
    $i++;
    continue 1; 
    } else {
    
    $error_messages.="Error in Command #$command_number: ".$tparams[$i]." is an incorrect value for ".$correct_range[$i]["unit"].", it must be between ".$correct_range[$i]["low"]." and ".$correct_range[$i]["high"].".<br>\r\n";
    
    }
    
    } elseif (preg_match("/^(([0-9]{1,2}|[0-9]{1,2}-[0-9]{1,2}),?)+$/",$tparams[$i])) {
    
    /**********Check for Comma and Ranges (can be mixed)*************/
    
    
    /*Separate Out Values Separated by Commas*/
    
    $tparams[$i]=str_replace(",", " ", $tparams[$i]);
    
    //$error_messages.="Parameter String: $tparams[$i]<br>";
    $alternate_values=explode(" ",$tparams[$i]);
    
    $i_av=0;
    
    /*Cycle through each value to compare with corresponding time unit*/
    
    while (isset($alternate_values[$i_av])) {
    
    /*Check if it is a range */
            
    if(preg_match("/^[0-9]{1,2}-[0-9]{1,2}$/",$alternate_values[$i_av])) {
    
            $range=explode("-",$alternate_values[$i_av]);
            
            /*Make Sure High > Low */
            
            if ($range[0]>=$range[1]) {
            $error_messages.="Error in Command #$command_number: Low value of range ".$alternate_values[$i_av]." in ".$correct_range[$i]["unit"]." field is greater than or equal to high value.<br>\r\n";
            }
            $i_range=0;
            while(isset($range[$i_range])){
            if (!isIntegerInRange($range[$i_range], $correct_range[$i]["low"], $correct_range[$i]["high"])) {
    
            $error_messages.="Error in Command #$command_number: ".$range[$i_range]." is an incorrect value for ".$correct_range[$i]["unit"].", it must be between ".$correct_range[$i]["low"]." and ".$correct_range[$i]["high"].".<br>\r\n";
    
            }
            $i_range++;
            }
    
            $i_av++;
            continue; //continue with while loop
              
    }
    
    /*If not a range, check individual value*/
    
    //$error_messages.="Value: $alternate_values[$i_av]<br>";
    if (!isIntegerInRange($alternate_values[$i_av], $correct_range[$i]["low"], $correct_range[$i]["high"])) {
    
    
    $error_messages.="Error in Command #$command_number: ".$alternate_values[$i_av]." is an incorrect value for ".$correct_range[$i]["unit"].", it must be between ".$correct_range[$i]["low"]." and ".$correct_range[$i]["high"].".<br>\r\n";
    
    }
    
    
    $i_av++; /*Increment $alternate_values[$i_av] */
    }
    
    } else {
    /* If doesn't match any of the patterns it's non-conforming */
    $error_messages.="Error in Command #$command_number: The time parameters are in incorrect format<br>\r\n";
    
    }
    
    $i++; /* Increment tparams[$i] value */
    }
    return $error_messages;
    
    }    
    

downloadFile

 boolean downloadFile(string $download_file_path, string $download_file_name)

 Sends an octet stream header to browser forcing a download of the file  found
 at $download_file_path with the $download_file_name.  It needs to be called
 before headers are sent and should end before any output is sent or use
 output buffering.  

 string $download_file_path - path of the file to be downloaded
 string $download_file_name - file name which the download file will be
 saved as on the local computer (not the name
                             of the download file on the server)

 False on failure, true on success.

 if($download_log) {
 $download_file_name="phpcron_logfile".date("mdy_H_i").".txt";    
 downloadFile($log_result_file, $download_file_name);
 exit;  
 }

    function downloadFile($download_file_path, $download_file_name) {
       
    if (!$download_file_path or !file_exists($download_file_path) or !is_readable($download_file_path)) {
    
    return false;
    }
    $data=file($download_file_path);
    
    $data=trim(implode("",$data));
    
    header ("Content-length: " . strlen($data)); 
    header ("Content-type: application/octetstream");
    header ("Content-disposition: inline; filename=$download_file_name");
    
    print($data);
      
    return true;        
    }