- public static function s($key, $default = '')
- {
- return (string)Post::_get($key, $default);
- }
+ public static function s($key, $default = '')
+ {
+ return (string)Post::_get($key, $default);
+ }
+
+ public static function t($key, $default = '')
+ {
+ return trim(Post::s($key, $default));
+ }
+
+ public static function blank($key, $strict = false)
+ {
+ if (!Post::has($key)) {
+ return true;
+ }
+ $var = $strict ? Post::s($key) : Post::t($key);
+ return empty($var);
+ }