3v4l.org

run code in 300+ PHP versions simultaneously
<?php $images[] = "/cache/user-ErgL4WpHE4SGK7pc-2014-09-17_10-10-18-questionmark.png"; preg_match('/-([a-zA-Z0-9]*).png/', (string)current($images), $matches); var_dump($matches);
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.11 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(2) { [0]=> string(17) "-questionmark.png" [1]=> string(12) "questionmark" }
preferences:
222.13 ms | 406 KiB | 310 Q