#34128 [Opn->Fbk]: Problem accessing the value of static class members from sub-classes

ID: 34128 Updated by: tony2001@php.net Reported By: tim dot rodger at gmail dot com -Status: Open +Status: Feedback Bug Type: Class/Object related Operating System: Debian Sarge (kernel 2.6.12) PHP Version: 5.0.4 New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip Previous Comments: ------------------------------------------------------------------------ [2005-08-14 15:08:17] tim dot rodger at gmail dot com Description: ------------ When a static (either public or protected) class member is initialised to a default value in a class declaration and later the value is over-written in the class where it is decalred, inheriting classes cannot access the new member value. In the example class Bar can access the value assigned to Foo's $name member, but Bar cannot access the value assigned to Foo's $age member. If the $age member is assigned a value inside class Bar (in the constructor for example) then the code works as expected. Reproduce code: --------------- <?php class Foo{ protected static $name; protected static $age = NULL; public function __construct($name, $age){ self::$name = $name; self::$age = $age;} protected static function getName(){return self::$name;} protected static function getAge(){return self::$age;} } class Bar extends Foo { public function __construct($name, $age){ parent::__construct($name, $age);} public function display(){ print "name = '" . self::$name . "'\ngetName() = '" . self::getName() . "'\nage = '" . self::$age . "'\ngetAge() = '" . self::getAge() . "'\n";} } $b = new Bar('test', 100); $b->display(); ?> Expected result: ---------------- name = 'test' getName() = 'test' age = '100' getAge() = '100' Actual result: -------------- name = 'test' getName() = 'test' age = '' getAge() = '100' ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=34128&edit=1