Как може да се направи един Looping на Template Parser?

[Ticketa]

Някой можели да ми помогне да направим на тоя Template Parser един Looping.

Т.е. искам примерно в темплейт файла да има:

<html>
<head>
<title>title</title>
</head>
<body>
<h1>{COMMENTS_PAGE}</h1>

{LOOP_START:comment}
<strong>{username}</strong>
<p>{comment}</p>
<br />
{LOOP_END:comment}
</body>
</html>


Аз си мислех, че с preg_match_all ще стане, обаче не се оправих...

preg_match_all ("!\(LOOP_START\)(.?)\(\/LOOP_END\)!", $value, $output);

<?php
	class Template{
	
		private $tags = array();
		private $cacheLifeTime;
		private $cacheMod;
		private $cacheDir;
		private $viewDir;
		private $cacheKey;
		
		public function Display($view_name){
			$pathtofile = $this->cacheDir."/".md5($this->cacheKey)."/".$view_name.".php";
			if(!file_exists($this->viewDir."/".$view_name.".tpl")){
				die("Failed to compile template: ".$view_name." not exists");
			}else{
				if($this->cacheMod == true){
					if($this->isCached($view_name)){
						include_once($this->cacheDir."/".md5($this->cacheKey)."/".$view_name.".php");
					}else{
						if(!is_dir($this->cacheDir."/".md5($this->cacheKey))){
							mkdir($this->cacheDir."/".md5($this->cacheKey), 0, true);
						}
						$output = file_get_contents($this->viewDir."/".$view_name.".tpl");
						if(count($this->tags) > 0){
							foreach($this->tags as $key => $value){
								$output = str_replace('{'.$key.'}', $value, $output);
							}	
						}
						$fp = fopen($this->cacheDir."/".md5($this->cacheKey)."/".$view_name.".php", "w+");
						fwrite($fp, $output);
						fclose($fp);
						include_once($this->cacheDir."/".md5($this->cacheKey)."/".$view_name.".php");
					}
				}else{
					$output = file_get_contents($this->viewDir."/".$view_name.".tpl");
						if(count($this->tags) > 0){
							foreach($this->tags as $key => $value){
								$output = str_replace('{'.$key.'}', $value, $output);
							}
						}	
					echo $output;
			            }
			}
		}
		
		public function setVars($tag, $value){
			if(is_array($tag) && is_array($value)){
				foreach(array_combine($tag, $value) as $key => $value){
					$this->tags[$key] = $value;
				}
			
			}elseif(!is_array($tag) && is_array($value) || is_array($tag) && !is_array($value)){
				die("Failed to compile template: Tag or Value not array.");
			}elseif(!is_array($tag) && !is_array($value)){
				$this->tags[$tag] = $value;
			}
		}
		
		public function setCacheMod($bool){
			if(!is_bool($bool)){
				$this->cacheMod = false;
			}else{
				$this->cacheMod = $bool;
			}
		}
		
		public function setCacheLifeTime($seconds){
			if(!is_numeric($seconds)){
				$this->cacheLifeTime = 0;
			}else{
				$this->cacheLifeTime = round($seconds);
			}
		}
		
		public function setCacheKey($key){
			$this->cacheKey = $key;
		}
		
		public function setDirs($cache, $tmpl){
			if($cache != ""){
				$this->cacheDir = $cache;
			}
			if($tmpl != ""){
				$this->viewDir = $tmpl;
			}
		}
		
		private function isCached($view_name){
			$pathtofile = $this->cacheDir."/".md5($this->cacheKey)."/".$view_name.".php";
			if(file_exists($pathtofile)){
				if(filemtime($pathtofile) > (time() - $this->cacheLifeTime)){
					return true;	
				}else{
					unlink($pathtofile);
					return false;	
				}
			}
		}
	}

?>