simplie php template engine

PHPView.php

<?php
/**
 * 简单PHP模板引擎
 * 
 * @author Anye
 *
 */
class PHPView
{
	protected $data = array();

	public function __construct() { }

	public function assign($varname, $var)
	{
		$this->data["{$varname}"] = $var;
	}

	public function fetch($tpl_file)
	{
		if (is_file($tpl_file)){
			ob_start();
			ob_implicit_flush(0);
			$this->display($tpl_file);
			$content  = ob_get_clean();

			return $content;
		} else {
			throw new Exception("{$tpl_file} NOT EXIST");
		}
	}

	public function display($tpl_file)
	{
		if (is_file($tpl_file)){
			extract($this->data);
			include $tpl_file;
		} else {
			throw new Exception("{$tpl_file} NOT EXIST");
		}
	}
}