YAF模板引擎性能优化 eval

[php]代码库

class Ext_View extends Yaf_View_Simple {
    private $tmpPath;
    private $tmpData = array();
    private $include;
    //用于保存模板内容的静态变量
    protected static $_fileArr = array();
    public function display($tplFile, $data = array()) {
        $this->tmpPath = $this->getScriptPath() . '/' . $tplFile;
        if (is_array($data)) {
            $this->tmpData = array_merge($this->tmpData, $data);
        }
        unset($tplFile);
        unset($data);
        extract($this->tmpData, EXTR_OVERWRITE);
        //判断模板文件是否已经在变量中，不存在就读取
        if (!isset(self::$_fileArr[$this->tmpPath])) {
            self::$_fileArr[$this->tmpPath] = file_get_contents($this->tmpPath);
        }
        eval('?>'.self::$_fileArr[$this->tmpPath]);
    }
    //其他代码略
}