3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function test(string $test = null) : string { var_dump($test); return (string)$test; } test();
based on te4Zo
Output for 7.0.0 - 7.2.0
NULL
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/0ntHc on line 3
Process exited with code 255.