note 101778 deleted from language.oop5.magic by danbrown

Note Submitter: chris at sightworks dot com ---- Re: Sammaye's comment: <?php class user_bo { public function __get($name) { /* snipped */ } public function __set($name, $value) { /* snipped */ } } ?> isset($object->someProperty) [and by extension, isset($object->$somePropertyName)] aren't working because the class does not have __isset($name) defined. If __isset() is not defined, it falls back on the original mechanism of PHP, which means it's looking for a property directly on the object - returning false every time, because it's not actually set *on the object*. If you're overloading __get and __set, you should also be overloading __isset and __unset - the full set of property manipulation functions. If not, you're going to get unexpected behavior as noted above, because PHP is using a combination of your overload and it's knowledge of the object's properties, which aren't the same.