Bug #52741 [Asn->Bgs]: OOP late static bindings bug

Edit report at https://bugs.php.net/bug.php?id=52741&edit=1 ID: 52741 Updated by: colder@php.net Reported by: flyguy dot by at gmail dot com Summary: OOP late static bindings bug -Status: Assigned +Status: Bogus Type: Bug Package: Scripting Engine problem Operating System: * PHP Version: 5.3.3 Assigned To: colder Block user comment: N Private report: N New Comment: Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Due to the volume of reports we can not explain in detail here why your report is not a bug. The support channels will be able to provide an explanation for you. Thank you for your interest in PHP. As explained, not a bug. Previous Comments: ------------------------------------------------------------------------ [2010-09-14 09:52:12] colder@php.net You are dealing here with static properties (assigned to a class) and resolution fallbacks (reference to an undefined property in one class) my_child::$blabla will fallback to the parent property, since strictly speaking no static property named "$blabla" exists in my_child. It will thus reference my_parent::$blabla. No bug here. ------------------------------------------------------------------------ [2010-09-13 23:01:24] flyguy dot by at gmail dot com Sory, my English is very bad :)) ------------------------------------------------------------------------ [2010-09-13 22:46:23] flyguy dot by at gmail dot com class my_parent { public static $blabla='asd'; public static function set_blabla($val) { static::$blabla=$val; } } class my_child extends my_parent { } my_child::set_blabla('qwerty'); var_dump(my_child::$blabla); var_dump(my_parent::$blabla); -------- prints: string 'qwerty' (length=6) string 'qwerty' (length=6) ---- This is normal code too ? Why changed extended propety on parent ? By your logic inherited properties are not inherited properties. Simply class-parent becomes part of the subclass. ------------------------------------------------------------------------ [2010-09-13 21:42:17] colder@php.net parent:: forwards LSB information In the initial case, it makes it perfectly normal for get_called_class to return test2, this is by design, if you don't want to pass the LSB info, reference your class by name, without keyword (i.e. test1::testing_method()). --- Johannes: on test3::testingmethod(): - parent::testing_method() will call parent (here test2), passing LSB info (test3) - test2::testing_method falls back to test1::method, passing LSB info test1::testing_method's get_called_class will be test3. To me it sounds perfectly normal? --- For the last comment: static::$field is resolved to once my_child::$field and once my_parent::$field, my_child::$field falls back to my_parent::$field, and updates it. => normal again Am I missing something here? ------------------------------------------------------------------------ [2010-09-13 00:13:13] flyguy dot by at gmail dot com Ok. This situation is analogous to the one hand, but why then: class my_parent { public static $field; public static function field_setup() { static::$field='asd'; } } class my_child extends my_parent { } my_child::field_setup(); var_dump(my_child::$field); var_dump(my_parent::$field); ---------- prints: string 'asd' (length=3) string 'asd' (length=3) ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=52741 -- Edit this bug report at https://bugs.php.net/bug.php?id=52741&edit=1