3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class Foo { private $x ='x'; public function a(self $foo): void { var_dump($foo->x); } }
based on NCDaR
Output for hhvm-3.15.4, 7.0.0 - 7.3.0rc3
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/huVWG on line 6
Process exited with code 255.