3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = [1 => 2, 2 => 3]; echo array_rand($x);
Output for 7.0.0, 7.0.4, 7.0.7, 7.0.10 - 7.0.14, 7.0.19, 7.1.0 - 7.1.1, 7.1.10, 7.2.0, 7.2.7 - 7.2.9, 7.2.13, 7.3.0 - 7.3.1
2
Output for 7.0.1 - 7.0.3, 7.0.5 - 7.0.6, 7.0.8 - 7.0.9, 7.0.15 - 7.0.18, 7.0.20, 7.1.2 - 7.1.7, 7.1.25, 7.2.1 - 7.2.6, 7.2.10 - 7.2.12
1

preferences:
79.57 ms | 403 KiB | 52 Q