phpcms2008破绽

<?phprequire dirname(__FILE__).'/include/common.inc.php';if($PHPSESSID) {	session_id($PHPSESSID);	session_start();}if($auth) set_cookie('auth', $auth);if(!get_cookie('cookietime') && $cookietime) set_cookie('cookietime', $cookietime);require_once 'admin/model_field.class.php';<span style="color: #ff0000;">$field = new model_field($modelid);$info = $field->get($fieldid);

    function __construct($modelid)    {		global $db;		$this->db = &$db;		$this->table = DB_PRE.'model_field';		echo($modelid);		<span style="color: #ff0000;">$model = $this->db->get_one("SELECT * FROM ".DB_PRE."model WHERE modelid=$modelid");</span>		$this->modelid = $model['modelid'];		$this->modelname = $model['name'];		$this->fields =  cache_read($modelid.'_fields.inc.php', CACHE_MODEL_PATH);		$this->tablename = DB_PRE.'c_'.$model['tablename'];    }