note 33772 added to language.oop

PHP doesn't know abstract classes, it'll always let you instantiate any defined class. Not a critical problem if you (and your staff) are disciplined, but if you want to enforce it, here's a simple way to do so from the constructor: class AbstractClass { ....function AbstractClass() { ........assert( is_subclass_of($this, 'AbstractClass') ); ........// remainder of constructor code ....} } Any subclass of AbstractClass can be instantiated, but trying to instantiate AbstractClass itself results in an assertion failure. ---- Manual Page -- http://www.php.net/manual/en/language.oop.php Edit Note -- http://master.php.net/manage/user-notes.php?action=edit+33772 Delete Note -- http://master.php.net/manage/user-notes.php?action=delete+33772&report=yes Reject Note -- http://master.php.net/manage/user-notes.php?action=reject+33772&report=yes