3v4l.org

run code in 300+ PHP versions simultaneously
<?php print_r($_ENV); echo PHP_EOL . '=============' . PHP_EOL; system('xterm');
Output for 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [TERM] => xterm [PATH] => /usr/bin:/bin [LANG] => C [SHELL] => /bin/sh [MAIL] => /var/mail/nobody [LOGNAME] => nobody [USER] => nobody [HOME] => /tmp ) ============= Warning: system(): Unable to fork [xterm] in /in/sNkfT on line 4
Output for 5.4.0 - 5.4.45, 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 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
Array ( [TERM] => xterm [PATH] => /usr/bin:/bin [LANG] => C [SHELL] => /bin/sh [MAIL] => /var/mail/nobody [LOGNAME] => nobody [USER] => nobody [HOME] => /tmp ) =============
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Array ( [TERM] => xterm [PATH] => /usr/bin:/bin [LANG] => C [SHELL] => /bin/sh [MAIN] => /var/mail/nobody [LOGNAME] => nobody [USER] => nobody [USERNAME] => nobody [HOME] => / ) ============= sh: 1: xterm: not found
Output for 4.3.1 - 4.3.9, 5.0.0 - 5.0.1
Array ( [TERM] => xterm [PATH] => /usr/bin:/bin [LANG] => C [SHELL] => /bin/sh [MAIN] => /var/mail/nobody [LOGNAME] => nobody [USER] => nobody [USERNAME] => nobody [HOME] => / ) Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/sNkfT on line 3 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/sNkfT on line 3 PHP_EOL=============PHP_EOLsh: 1: xterm: not found
Output for 4.3.0
Array ( [TERM] => xterm [PATH] => /usr/bin:/bin [LANG] => C [SHELL] => /bin/sh [MAIN] => /var/mail/nobody [LOGNAME] => nobody [USER] => nobody [USERNAME] => nobody [HOME] => / ) Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/sNkfT on line 3 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/sNkfT on line 3 PHP_EOL=============PHP_EOL

preferences:
295.65 ms | 402 KiB | 459 Q