3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ar = ['filename.en_us.srt', 'filename.en_uk.srt', 'filename.fr_fr.srt']; foreach($ar as $a) { preg_match('/\.([^\.]*)\.srt$/', $a, $matches); echo $matches[1]."\n"; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
en_us en_uk fr_fr

preferences:
140.82 ms | 403 KiB | 167 Q