3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php declare(strict_types = 1); abstract class test{ abstract public function hi(): string; } class hello extends test { public function hi(): string { return array(); } }
based on 7Brq7
Output for 7.0.0 - 7.2.0
Output for 5.3.18 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/Y0b4J on line 2 Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/Y0b4J on line 5
Process exited with code 255.