#46286 [Opn->Bgs]: Extending class with static getInstance()-type method

ID: 46286 Updated by: colder@php.net Reported By: bob at db dot org -Status: Open +Status: Bogus Bug Type: Feature/Change Request Operating System: Any PHP Version: 5.3.0alpha2 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. retrurn new static(); Previous Comments: ------------------------------------------------------------------------ [2008-10-13 18:14:10] bob at db dot org Description: ------------ A getInstance() method is a fairly common design-pattern, yet it's impossible to create such a function in a base-class and have it function as expected when access via the inheriting class. I understand that this is documented behavior, and that it's probably impossible to achieve this using existing syntax/functions. What I'm hoping for is a new function; something like get_statis_class(void) that will return the name of the class used to *access* the static method, not the name of the class in which it was defined. I can provide more elaboration on why this is a nice feature if needed. The attached example is kept short to illustrate the problem as clearly as possible. Reproduce code: --------------- <?php class base { public static function getInstance() { $class = __CLASS__; return new $class(); } } class heir extends base { } $instance = heir::getInstance(); die(get_class($instance)); ?> Expected result: ---------------- heir Actual result: -------------- base ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=46286&edit=1