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run code in 300+ PHP versions simultaneously
<?php $ar = ['filename.en_us.srt', 'filename.en_uk.srt', 'file.name.en_uk.srt']; foreach($ar as $a) { preg_match('/\.([^\.]*)\.srt$/', $a, $matches); echo $matches[1]."\n"; }

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50.79 ms | 402 KiB | 5 Q