php定义常用返回信息

<?php
//定义所有的返回信息
define('DOCUMENT_ROOT',$_SERVER['PHP_SELF']);
define('SUCCESS_RET','success');
define('FAILED_RET','fail');
define('WRONG_IN','wrong insert');
define('TIME_OUT','timeout');
define('NO_ACCOUNT', 'no account');
define('ACCOUNT_EXIST','account exist');
define('PERMISION_ROOT','need root permision');
define('PERMISION_ROOT_NO_CHANGE','root permision no change');
define('SOME_BUSY','som busy');
define('NO_PERMISION','no permision');
define('ACCOUNT_NO_EXIST','account not exist');
?>