3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class A0 {}; class A1 extends A0 {}; $a = function ($a) : A0 {return $a;}; $a(new A1());
based on aADY9
Output for 7.0.0 - 7.2.0
Output for 5.3.22 - 5.6.21
Parse error: syntax error, unexpected ':', expecting '{' in /in/5WXK8 on line 5
Process exited with code 255.