3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { static private $foo = [ 16 => 'xyz', 7 => 'x', 8 => 'y', 9 => 'xy' ]; }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.16, 8.5.0 - 8.5.1
preferences:
194.61 ms | 409 KiB | 5 Q