3v4l.org

run code in 500+ PHP versions simultaneously
<?php $os = array( "1" => "Mac/OSX", "2" => "PC/Windows" ); array_map(function($v){ if (strpos($v, 'Mac') !== false) { echo 'found'; exit; } },$os); echo "Not found";
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 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
found
preferences:
149.01 ms | 1610 KiB | 4 Q