3v4l.org

run code in 500+ PHP versions simultaneously
<?php $argv = [1,2,3]; $_POST = [1,2,3]; function foo(?array $argv = null) { if ($argv === null) { global $argv; } print_r($argv); } foo(); foo([4,5,6]);
Output for 7.2.17 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Array ( [0] => 1 [1] => 2 [2] => 3 ) Array ( [0] => 4 [1] => 5 [2] => 6 )

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27.33 ms | 1152 KiB | 7 Q