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<?phpclass template{	var $vars = array();	var $tpldir = "templates/";	function __construct($path = "templates/") 	{		$this->tpldir = $path;	}	public function assign($varname, $varcontent)	{		if (!is_array($varcontent))		{			$this->vars[$varname] = $varcontent;		}		else		{			die("Arrays werden nicht unterstützt!");		}	}	public function display($template)	{		if (file_exists($this->tpldir.$template))		{			$tplload = file_get_contents($this->tpldir.$template);			$tplload = $this->tpl_include($tplload);			$tplload = $this->tpl_session($tplload);			$tplload = $this->tpl_if($tplload);			while (preg_match("/\{%(.*)\}/", $tplload, $match) == 1)			{				if (!isset($this->vars[$match[1]]))				{					die("Die Variable $match[1] wurde nicht zugewiesen");				}				else				{					$tplload = str_replace($match[0], $this->vars[$match[1]], $tplload);				}			}			echo $tplload;		}		else		{			die("Die angegebene Templatedatei existiert nicht!");		}	}	private function tpl_include($template)	{		while (preg_match("/\{include:(.*)}/", $template, $match))		{			if(file_exists($this->tpldir.$match[1]))			{				$incload = file_get_contents($this->tpldir.$match[1]);				$template = str_replace($match[0], $incload, $template);			}			else			{				die ("Die Datei $match[1] existiert nicht");			}		}		return $template;	}	private function tpl_session($template)	{		while (preg_match("/\{session\:(.*)\=(.*)\}(.*){\/session}/s", $template, $match))		{			if ($_SESSION[$match[1]] == $match[2])			{				$template = str_replace($match[0], $match[3], $template);			}			else			{				$template = str_replace($match[0], NULL, $template);			}		}		return $template;	}	private function tpl_if($template)	{		while (preg_match("/\{if\:(.*)\=(.*)\}(.*){\/if}/s", $template, $match))		{			if ($this->vars[$match[1]] == $match[2])			{				$template = str_replace($match[0], $match[3], $template);			}			else			{				$template = str_replace($match[0], NULL, $template);			}		}		return $template;	}}?>