Bug #67128 [Opn->Nab]: class_alias is broken with abstract classes

Edit report at https://bugs.php.net/bug.php?id=67128&edit=1 ID: 67128 Updated by: nikic@php.net Reported by: mail at adrianlang dot de Summary: class_alias is broken with abstract classes -Status: Open +Status: Not a bug Type: Bug Package: Class/Object related PHP Version: 5.5.11 Block user comment: N Private report: N New Comment: The issue here is that the classes are early-bound, so the alias does not exist at the point in time when the method signatures are verified. You can fix this by defining the classes in a different file or forcing late binding. Previous Comments: ------------------------------------------------------------------------ [2014-04-24 13:50:01] mail at adrianlang dot de Description: ------------ While verifying the signature of a class against the signature of an abstract class it extends, apparently class aliases are not correctly taken into account. This works if the class implements an interface or extends a non-abstract class. See also https://github.com/facebook/hhvm/issues/2527. Test script: --------------- class A {} class_alias( 'A', 'B' ); abstract class UserOfA { abstract public function someMethod( B $a ); } class ActualUserOfA extends UserOfA { public function someMethod( A $a ) { } } Actual result: -------------- PHP Fatal error: Declaration of ActualUserOfA::someMethod() must be compatible with UserOfA::someMethod(B $a) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67128&edit=1