note 59224 added to language.oop5.basic

Note that a function defined in the parent class may not access a private member of a child class. <?php class A { public function foo() { echo $this->x; } } class B extends A { protected $x = "class B's member"; } class C extends A { private $x = "class C's member"; } $b = new B(); $b->foo(); $c = new C(); $c->foo(); // Output: // class B's member // Fatal error: Cannot access private property C::$x ?> In the above example, if you don't want to duplicate function foo() in all of the child classes you would have to make each member foo() operates on protected or public. Effectively breaking encapsulation to in order to implement polymorphism. ---- Manual Page -- http://www.php.net/manual/en/language.oop5.basic.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+59224 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+59224&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+59224&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+59224&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+59224&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+59224&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+59224&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+59224&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+59224&report=yes Search -- http://master.php.net/manage/user-notes.php