3v4l.org

run code in 300+ PHP versions simultaneously
<?php class C { public static function keys() { return array(1,2,3); } } class B { private $config = array('abcd' => C::keys()); }
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.25
Parse error: syntax error, unexpected '(', expecting ')' in /in/1WdUb on line 13
Process exited with code 255.
preferences:
191.79 ms | 1399 KiB | 62 Q