3v4l.org

run code in 300+ PHP versions simultaneously
<?php defined('EMPTY_STRING') or define('EMPTY_STRING', strval(NULL)); if(implode(EMPTY_STRING, array_fill(0, 10, PHP_EOL)) === str_repeat(PHP_EOL, 10)) { echo '='; } else { echo '!='; }
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
=
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/4otSP on line 5 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/4otSP on line 5 =
preferences:
215.64 ms | 402 KiB | 358 Q