3v4l.org

run code in 300+ PHP versions simultaneously
<?php $url = 'http//www.google.com/'; $cmd = "top"; exec($cmd, $status); echo $status[0]; ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: exec(): Unable to fork [top] in /in/WmOjY on line 4 Warning: Undefined array key 0 in /in/WmOjY on line 5
Output for 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.25, 7.4.27 - 7.4.33
Warning: exec(): Unable to fork [top] in /in/WmOjY on line 4 Notice: Undefined offset: 0 in /in/WmOjY on line 5
Output for 7.3.32 - 7.3.33, 7.4.26
Warning: exec(): Unable to fork [top] in /in/WmOjY on line 4
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.6, 7.3.12, 7.4.0
Notice: Undefined offset: 0 in /in/WmOjY on line 5
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
preferences:
221.43 ms | 403 KiB | 345 Q