3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = NULL; $y = NULL; $z = 3; $result = !empty($x) ? $x : (!empty($y) ? $y : (!empty($z) ? $z : 'empty')); echo $result;
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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
3
preferences:
157.88 ms | 404 KiB | 198 Q