3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface A { } interface B extends A { } class C { public function test(A $a) { } } class D extends C { public function test(B $a) { } }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of D::test(B $a) must be compatible with C::test(A $a) in /in/I8jO2 on line 23
Process exited with code 255.

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page


preferences:
35.83 ms | 401 KiB | 8 Q