3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php interface A { public function foo(A $a); } class B implements A { public function foo($a) {} }
based on jmoFf
Output for 7.2.0 - 7.2.6
Output for 7.0.0 - 7.1.20
Fatal error: Declaration of B::foo($a) must be compatible with A::foo(A $a) in /in/mDQ74 on line 4
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Declaration of B::foo() must be compatible with A::foo(A $a) in /in/mDQ74 on line 4
Process exited with code 255.