3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "namespace Concrete\Package\Derp\MenuItems\Derp;"; $regex = "/^namespace\\s+Concrete\\\\Package\\\\[^\\\\]+\\\\(.+?)(?:\\\\.+)?;$/i"; $results = array(); preg_match($regex, $string, $results); var_dump($results);
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 - 7.2.33, 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
array(2) { [0]=> string(47) "namespace Concrete\Package\Derp\MenuItems\Derp;" [1]=> string(9) "MenuItems" }

preferences:
260.56 ms | 406 KiB | 461 Q