#49702 [Bgs]: I have access to the private attributes of a give class

ID: 49702 User updated by: vito_web at yahoo dot com Reported By: vito_web at yahoo dot com Status: Bogus Bug Type: Class/Object related Operating System: Linux PHP Version: 5.3.0 New Comment: Sorry, I thought that it works like in java. In java such code would not even compile. Not very good decision for OOP in PHP to create another private property at the time when the parent has already such property with the same name. Anyway thanks Previous Comments: ------------------------------------------------------------------------ [2009-09-28 19:02:06] sjoerd@php.net Thank you for your report. The behavior you describe is not a bug. The statement $obj2->private = "Hacked"; does not change the private property of MyClass. Instead, it creates a new public property on MyClass2. ------------------------------------------------------------------------ [2009-09-28 18:25:04] vito_web at yahoo dot com <?php class MyClass { private $private = 'Private'; } class MyClass2 extends MyClass { protected $protected = 'Protected2'; } $obj2 = new MyClass2(); $obj2->private = "Hacked"; echo $obj2->private; // should be fatal error by accessing the private property, but it displays the string "Hacked" ?> ------------------------------------------------------------------------ [2009-09-28 18:11:35] vito_web at yahoo dot com Description: ------------ <?php /** * Define MyClass */ class MyClass { public $public = 'Public'; protected $protected = 'Protected'; private $private = 'Private'; function printHello() { echo $this->public; echo $this->protected; echo $this->private; } } $obj = new MyClass(); echo $obj->public; // Works //echo $obj->protected; // Fatal Error //echo $obj->private; // Fatal Error $obj->printHello(); // Shows Public, Protected and Private /** * Define MyClass2 */ class MyClass2 extends MyClass { // We can redeclare the public and protected method, but not private protected $protected = 'Protected2'; function printHello() { echo $this->public; echo $this->protected; echo $this->private; } } $obj2 = new MyClass2(); echo $obj2->public; // Works echo $obj2->private = "Hacked"; echo $obj2->private; // Undefined //echo $obj2->protected; // Fatal Error $obj2->printHello(); // Shows Public, Protected2, Undefined ?> Expected result: ---------------- PHP Fatal error: Cannot access private property MyClass2::$private in...... Actual result: -------------- PublicPublicProtectedPrivatePublicHackedHackedPublicProtected2Hacked ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=49702&edit=1