Cron Design: Cron Script Part 3
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Cron Design: Introduction | Running Cron | Cron Script Part 1 | Cron Script Part 2 | Cron Script Part 3
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Uniform Server Portable Cron Design |
Uniform Servers portable Cron script is shown below.
It includes a logging function and user period translation these are added to a Unix timestamp to produce a new start time reference.
Final Script
<?php
/*
###############################################################################
# Name: run_cron.php
# Developed By: The Uniform Server Development Team
###############################################################################
*/
#error_reporting(0); // Disable PHP errors and warnings
// Comment to Enable for testing
chdir(dirname(__FILE__)); // Change wd to this files location
include_once "../main/includes/config.inc.php";
include_once "../main/includes/functions.php";
//== Variables
$logging = true; // true = Enable logging false = disable logging
$log_file = "cron_log.txt"; // log file name (Can include a reative path)
$file = "cron.ini"; // name of configuration (Can add a reative path)
$cron_time = 60; // Set cron time (tick) in seconds. Default 1 Min
$loop = $cron_time; // Set equal allows immediate first time run
if($logging){
cron_log("### Log Started =========================");
}
//== Main loop
while(TRUE){ // Infinite loop.
if(get_cron_tracker() != "run"){ // Check every second for user cron stop
break; // reqest. Breaks out of while loop and
} // kills script.
else{
if($loop == $cron_time){ // True for first entry hence immediately
// runs scriptss. There after run at
// cron time.
//#############################################################################
//# Scan Ini File #
//#############################################################################
$ini_array = parse_ini_file($file, true); // Read cron.ini into array
foreach($ini_array as $key => $value){ // Scan array's main keys
$tim = strtotime("now"); //current time
$tim_s = strtotime($ini_array[$key]['start']); // Get start time
$period = $ini_array[$key]['period']; // Get period
$path = $ini_array[$key]['path']; // Get path to run script
$ref = $ini_array[$key]['ref']; // Get repeat time marker
if((float)$tim > (float)$tim_s){ // New start or started
if( $ref != ""){ // It was started
if( (float)$tim < (float)$ref ){ // Is it a triggered update
continue; // No: Start next foreach
}
}
//== Eiter a new start or triggered update hence run script
if($period == "hourly"){ // ... Get user defined period
$offset =(60*60); // Set number of corresponding
} // seconds ...
if($period == "daily"){
$offset =(24*60*60);
}
if($period == "weekly"){
$offset =(7*24*60*60);
}
if($period == "monthly"){
$offset =(4*7*24*60*60);
}
if(preg_match('/^\d+/',$period)){ // If is digits
$offset = (int)$period; // Set to int
}
$ref = $tim + $offset; // Create new repeat time marker
my_ini_set($file,$key,'ref',$ref); // Save to ini file for later use
// There are two file types that can be run browser or local CLI example:
// http://localhost/drupal/cron.php
// ..\..\plugins\dtdns_updater\dtdns_updater.php
// A user specifies only the path/filename
if(preg_match('/^http/',$path)){ // Is it a browser address
$dummy = @file($path); // Yes: Run on Server, $dummy not used
if($logging){
cron_log($path); // Save to log and add time
}
}
else{ // No: Hence run local PHP script
$cmd = 'start uniserv.exe '. "\"..\..\usr\local\php\php.exe $path\"";
pclose(popen($cmd,'r')); // Start detatched process
if($logging){
cron_log($path); // Save to log and add time
}
}
}//if
}// End foreach
//#############################################################################
//# END Scan Ini File #
//#############################################################################
//print_r($dummy); // Test line displays cron page output
$loop =0; // Reset loop counter
}
$loop = $loop+1; // Increment loop counter
}
sleep(1); // Base delay one second allows stop to be checked
}
if($logging){
cron_log("### Log Ended ===========================\n");
}
//=== Log =====================================================================
// Logs Cron actions to a log file
// Input: String to be logged
// $file Path to file including file name
function cron_log($str){
global $log_file; // path and name to log file
$str = date('Y-m-d H:i')." ".$str."\n";
$fh = fopen($log_file, 'a') or die("can't open file");
fwrite($fh, $str);
fclose($fh);
}
//=== END Log =================================================================
?>
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Summary
The above script is provided as an example and subject to change if you require the latest version extract it from a new version of Uniform Server V5-Nano series.
File: UniServer\unicon\main\run_cron.php