3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump($a = [ 'a' => 1, 'b' => 2 ]);
Output for 5.6.0 - 5.6.29, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(2) { ["a"]=> int(1) ["b"]=> int(2) }
preferences:
62.47 ms | 1519 KiB | 4 Q