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stz184 on 02/16/11

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Last Edited at 02/16/11 07:34pm

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Logging class (Log messages to a file)

/ Published in: PHP

This class can log messages to a file. If the log file becomes too large (over 1MB), the class will archive it and will create new. If there are archives older than one month, they will be deleted automatically.
In the future versions I will add the opportunity to set max log size and max time to keep the archives.

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<?php
class logger {
	private $file;
	private $error = false;
	
	function __construct($file) {
		if(file_exists($file) && ((filesize($file) / 1024) > 1024)) {
			$dirname = dirname($file);
			$filename = basename($file);
			$newname = $dirname.'/'.date('d.m.Y').'_'.$filename;
			if(!rename($file, $newname)) {
				$this->error = 'Can\'t rename the old log file';
			}
			foreach (glob($dirname.'/*.log') as $logfile) {
				//Ð°ÐºÐ¾ Ð¸Ð¼Ð° ÑÑ‚Ð°Ñ€Ð¸ Ð»Ð¾Ð³Ð¾Ð²Ðµ Ð½Ð° Ð¿Ð¾Ð²ÐµÑ‡Ðµ Ð¾Ñ‚ 1 Ð¼ÐµÑÐµÑ†
				if(filemtime($logfile) < (time() - (30 * 24 * 3600))) {
					unlink($logfile);
				}
			}
			file_put_contents($file, '');
		}
		elseif(!file_exists($file)) {
			file_put_contents($file, '');
		}
		$this->file = $file;
	}
	
	function log_start() {
		$msg_start = 'Start time: '.date('d.m.Y h:i:s').PHP_EOL;
		if(!file_put_contents($this->file, $msg_start, FILE_APPEND)) {
			$this->error = 'Can\'t write to log';
		}
	}

$log = new logger('/path/to/log.txt'); //if file doesnt exiists, will be created
$log->log_start(); //this will insert timestap to mark the beginning
if($sallary < $work) {
	$log->log_message('Not acceptable sallary/work ratio');
}
$log->log_end(); //this will insert timestap to mark the end of current log

*/
?>

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