3v4l.org

run code in 300+ PHP versions simultaneously
<?php $numberOfRandoms = 500; $uniques = array(); for($i = 0; $i < $numberOfRandoms; $i++) { $uniques[mt_rand(10000, 99999)] = true; } $uniques = array_keys($uniques);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13, 7.3.0 - 7.3.1

preferences:
170.24 ms | 404 KiB | 227 Q