3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo '1' . 1; echo PHP_EOL; echo '1' + 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 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 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 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
11 2
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
11 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/uepb8 on line 4 PHP_EOL2

preferences:
272.8 ms | 402 KiB | 365 Q