ThinkPHP判斷post，get操作

define('REQUEST_METHOD',$_SERVER['REQUEST_METHOD']);
define('IS_GET',        REQUEST_METHOD =='GET' ? true : false);
define('IS_POST',       REQUEST_METHOD =='POST' ? true : false);
define('IS_PUT',        REQUEST_METHOD =='PUT' ? true : false);
define('IS_DELETE',     REQUEST_METHOD =='DELETE' ? true : false);