miniSmarty 簡易Smarty

简易的smarty 对新手理解smarty有帮助 源于itcast韩顺平老师smarty第2、3讲

	class MyMiniSmarty{

		public $template_dir = "./templates";
		public $complie_dir = "./templates_c";
		public $tpl_vars = array();

		public  function assign($tpl_var,$val = NULL){
			if(!empty($tpl_var)){
				$this->tpl_vars[$tpl_var] = $val;
			}
		}

		public  function display($tpl_file){
			$tpl_file_path = $this->template_dir.$tpl_file;
			$complie_file_path = $this->complie_dir."com_".$tpl_file.".php";
			if (file_exists($tpl_file_path) || filemtime($tpl_file_path) < filemtime($complie_file_path)) {
				$tpl_file_content = file_get_contents($tpl_file_path);

				$pattern = array(
					'/{s*$([a-zA-Z0-0_]*)s*}/i'
				);

				$replace = array(
					'tpl_vars["$程序猿闯子"] ?>'
				);

				$new_content = preg_replace($pattern, $replace, $tpl_file_content);

				try {
					file_put_contents($complie_file_path, $new_content);
				} catch (Exception $e) {
					echo $e->getMessage();
				}
				include $complie_file_path;

			}else {
				return FALSE;
			}
		}

	}
?>