3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo file_get_contents(__FILE__); echo PHP_EOL . '=============' . PHP_EOL; system('echo 1');
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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
<?php echo file_get_contents(__FILE__); echo PHP_EOL . '=============' . PHP_EOL; system('echo 1'); ============= Warning: system(): Unable to fork [echo 1] in /in/gk3Tr on line 4
Output for 5.4.39 - 5.4.45, 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 - 7.2.13, 7.3.0 - 7.3.1, 7.4.0
<?php echo file_get_contents(__FILE__); echo PHP_EOL . '=============' . PHP_EOL; system('echo 1'); =============
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, 5.4.0 - 5.4.38
<?php echo file_get_contents(__FILE__); echo PHP_EOL . '=============' . PHP_EOL; system('echo 1'); ============= 1
Output for 4.3.1 - 4.3.9, 5.0.0 - 5.0.1
<?php echo file_get_contents(__FILE__); echo PHP_EOL . '=============' . PHP_EOL; system('echo 1'); Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/gk3Tr on line 3 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/gk3Tr on line 3 PHP_EOL=============PHP_EOL1
Output for 4.3.0
<?php echo file_get_contents(__FILE__); echo PHP_EOL . '=============' . PHP_EOL; system('echo 1'); Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/gk3Tr on line 3 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/gk3Tr on line 3 PHP_EOL=============PHP_EOL

preferences:
236.31 ms | 401 KiB | 322 Q