3v4l.org

run code in 300+ PHP versions simultaneously
<?php //const DOCROOT = realpath(dirname(__DIR__)); define('DOCROOT', realpath(dirname(__DIR__)));
Output for 7.4.27 - 7.4.32, 8.0.14 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: realpath(): open_basedir restriction in effect. File(/) is not within the allowed path(s): (/tmp:/in:/etc) in /in/MQD7n on line 3
Output for 4.3.0 - 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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.26, 7.4.33, 8.0.0 - 8.0.13

preferences:
335.09 ms | 405 KiB | 464 Q