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<?php interface IA {} class IB implements IA {} abstract class A { public function __construct(IA $ia) { echo "works!"; } } class B extends A { public function __construct(IB $ib) { parent::__construct($ib); } } $b = new B(new IA());
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Cannot instantiate interface IA in /in/PLC16:17 Stack trace: #0 {main} thrown in /in/PLC16 on line 17
Process exited with code 255.

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