PHP Simple Template Engine

template.class.php

<?php

//模板文件路径定义
if (!defined('TPL_ROOT_PATH')) define('TPL_ROOT_PATH', dirname(__FILE__).'/tpl');

class Template {
	private $_data = array();
	private $_tpl_name;

	function __construct($tpl_name = '') {
		$this->_tpl_name = $tpl_name;
	}

	public function assign($data = array()) {
		$this->_data = array_merge($this->_data, $data);
	}

	public function fetch($tpl_name = '') {
		if($tpl_name == '' && $this->_tpl_name != '') {
			$tpl_name = $this->_tpl_name;
		}

		$tpl_path = TPL_ROOT_PATH . '/' . $tpl_name . '.php';
		if (file_exists($tpl_path)) {
			extract($this->_data, EXTR_SKIP);	

			ob_start();
			include $tpl_path;
			$content = ob_get_contents();
			ob_end_clean();

			return $content;
		} else {
			trigger_error('模板文件不存在！');
			return FALSE;
		}
	}

	public function show($tpl_name = '') {
		if($content = $this->fetch($tpl_name)) {
			echo $content;
		}
	}

}