extranet/includes/cache.php

<?php
/**
 * Cache - G<EFBFBD>re le cache de la page et des diff<EFBFBD>rents fichiers
 * @package Cache
 * @author Michael RICOIS
 * @copyright Scores&Decisions
 */

class Cache {
	
	public $content = '';
	public $length = '';
	public $forceStart = FALSE;
	public $fileName = '';
	public $path = '';
	public $disable = FALSE;
	
	private $maxTime = 6; //heures max en cache
	private $CacheRefreshHours = 16; //Raffraichir les pages apr<70>s xx heures
	
	function __construct(){
		$this->path = realpath(dirname(__FILE__).'/../cache/');
	}
	
	function startCapture($fileName){
		global $firephp;
		$fileName = str_replace('.php','',$fileName);
		$this->fileName = $this->path .'/'. $fileName;
		if(!$this->isInCache() || $this->forceStart){
			$firephp->log('Pas en CACHE','CACHE');
			ob_start();
			return TRUE;	
		}else{
			$firephp->log('En CACHE','CACHE');
			return FALSE;
		}
	}
	
	function stopCapture(){
		if (!$this->disable){
			if(!$this->isInCache() || $this->forceStart){
				$this->content = ob_get_contents();
				$this->length  = ob_get_length();
				ob_end_flush();
				$this->content.='<!-- Page fourni par le cache -->'; 	
				$this->create();
			}
		}else{
			//On supprime les fichiers pr<70>c<EFBFBD>dement cr<63>e pour qu'il soit g<>n<EFBFBD>r<EFBFBD> la prochaine fois
			$this->delete();
		}
	}
	
	function isInCache(){
		global $firephp;
		if(file_exists($this->fileName) && !$this->timeOver())
			return TRUE;
		else return FALSE;
	}

	function timeOver(){
		global $firephp;
		$dateFile = filemtime($this->fileName);
		$now= mktime(date('G'), date('i'), date('s'), date("m") , date("d"), date("Y"));
		$maxTime = mktime(date('G',$dateFile)+$this->maxTime, date('i',$dateFile), date('s',$dateFile), date("m",$dateFile), date("d",$dateFile), date("Y",$dateFile));
		$refreshHour = mktime($this->CacheRefreshHours, 0, 0, date("m"), date("d"), date("Y"));
		
		$firephp->log(date('G:i:s - d/m/Y',$dateFile),		'CACHE : dateFile ');
		$firephp->log(date('G:i:s - d/m/Y',$now),			'CACHE : now ');
		$firephp->log(date('G:i:s - d/m/Y',$maxTime),		'CACHE : MaxTime');
		$firephp->log(date('G:i:s - d/m/Y',$refreshHour),	'CACHE : RefreshHour ');
		
		if( ($now>$maxTime) || 
			($dateFile<$refreshHour && $now>$refreshHour) ) 
			return TRUE;
		else return FALSE;
	}
	
	function delete(){
		if(file_exists($this->fileName)){
			unlink($this->fileName);
		}
	}
	
	function displayCache(){
		if(file_exists($this->fileName)){
			return file_get_contents($this->fileName);
		}else{
			return 'Erreur';
		}
	}
	
	function create(){
		//Retrait <script>...</script>
		preg_replace('@<script[^>]*?>.*?</script>@si', '', $this->content);
		if( !file_put_contents($this->fileName, $this->content))
		{
			//TODO : Gestion des erreurs
		} 
	}
	
}
?>