php原生模版 (芽)

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getHtml($fileName);
        die($this->html);
    }

    //捕获输出
    public function fetch($fileName){
        $this->getHtml($fileName);
        return $this->html;
    }

    //添加过滤器
    public function loadFilter($filterName){
        $this->filters[] = $filterName;
    }

    private function getHtml($fileName){
        //检查文件是否存在
        if(!file_exists($fileName)){
            self::toError(basename($fileName).'文件不存在。');
        }

        //将输出缓存保存到变量
        ob_start();
        include($fileName);
        $this->html = ob_get_clean();

        //执行处理器函数……

    }

    //错误输出
    private static function toError($error){
        header('HTTP/1.0 500 Internal Server Error');
        die('Internal Server ErrorPHPTemplate: '.$error.'');
    }
}