3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php interface Foo { public function bar($foo); } class One implements Foo { public function bar($foo): bool { } }
based on ZARtE
Output for hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0rc3
Output for 5.6.30
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/gk7tH on line 8
Process exited with code 255.