3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php interface A {} class AA implements A {} class B { public function a(A $a); } class C extends B { public function a(AA $a); }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.4.3
Fatal error: Non-abstract method B::a() must contain body in /in/o02eU on line 8
Process exited with code 255.