#27367 [Opn->Bgs]: A protected parent constructor cannot be called

ID: 27367 Updated by: helly@php.net Reported By: andrey@php.net -Status: Open +Status: Bogus Bug Type: Zend Engine 2 problem Operating System: linux PHP Version: 5CVS-2004-02-23 (dev) New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php protected or private constructors are callable from static members aka factory pattern. Previous Comments: ------------------------------------------------------------------------ [2004-02-23 12:12:32] andrey@php.net Description: ------------ By default if a constructor in a subclass is not defined the constructor of the parent class is being called (see example 1). However, if the parent constructor is declared "protected" and is visible to the child, the engine refuses to execute the constructor (Example 2 and result 2). Example 3 shows that the parent constructor is visible in the child when an explicit constructor is provided there. Reproduce code: --------------- Ex. 1: php -r 'class a { function a() {echo "const of a\n";}} class b extends a {} $a = new b();' Ex. 2: php -r 'class a { protected function a() {echo "const of a\n";}} class b extends a {} $a = new b();' Ex. 3: php -r 'class a { protected function a() {echo "const of a\n";}} class b extends a {public function b(){parent::a();}} $a = new b();' Expected result: ---------------- const of a const of a const of a Actual result: -------------- Result 1 : const of a Result 2 : PHP Fatal error: Call to protected a::a() from context '' in Command line code on line 1 Result 3 : const of a ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=27367&edit=1