3v4l.org

run code in 300+ PHP versions simultaneously
<?php 'hello, world'; true; false; null; 1; {} 1.0; []; $b; [1, 2, 3][1]; ;
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.28, 7.4.0 - 7.4.16, 8.0.0 - 8.0.3