3v4l.org

run code in 300+ PHP versions simultaneously
<?php shell_exec("uname -a"); ?>
Output for 4.3.2 - 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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: shell_exec(): Unable to execute 'uname -a' in /in/QXo00 on line 1
Output for 7.1.10 - 7.1.33, 7.2.1 - 7.2.24, 7.3.0 - 7.3.12, 7.4.0
Output for 7.2.0

Process exited with code 137.
Output for 4.3.0 - 4.3.1
Warning: shell_exec() [http://www.php.net/function.shell-exec]: Unable to execute 'uname -a' in /in/QXo00 on line 1

preferences:
252.42 ms | 401 KiB | 411 Q