3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface IA { public function compare(self $x); } interface IAChild extends IA {} class A implements IA { public function compare(IA $x) {} } class AA implements IAChild { public function compare(IAChild $x){} } $a = new A; $aa = new AA; $a->compare($a); $a->compare($aa);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of AA::compare(IAChild $x) must be compatible with IA::compare(IA $x) in /in/ODkTf on line 15
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:
69.4 ms | 401 KiB | 8 Q