3v4l.org

run code in 300+ PHP versions simultaneously
<?php function experiment1($first, $two='') { echo $first . ' - ' . $two; } experiment1(1); $two = 2; function experiment2($first, $two='') { global $two; echo $first . ' - ' . $two; } experiment2(1); experiment2(1,3);
Output for 5.5.0 - 5.5.38, 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 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1 - 1 - 21 - 2
preferences:
234.92 ms | 404 KiB | 330 Q