3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php interface A { public function foo(): self; } class B implements A { public function foo(): A { return $this; } }
based on DNrQ2
Output for 7.0.0 - 7.2.0
Output for 5.3.21 - 5.6.21
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/YvVXZ on line 5
Process exited with code 255.