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run code in 200+ php & hhvm versions
Bugs & Features
<?php declare(strict_types=1); class A { public function foo() { return 'bar'; } } class B extends A { public function foo(): string { return 'derp'; } } $b = new B(); echo $b->foo();
based on KcPvG

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for Arrow functions
derp

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