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run code in 200+ php & hhvm versions
Bugs & Features
<?php $duration = '4m50s'; var_dump(preg_split('/((\d+)h)?((\d+)m)?((\d+)s)?/', $duration, null, PREG_SPLIT_NO_EMPTY & PREG_SPLIT_OFFSET_CAPTURE));
Output for 4.3.0 - 7.2.0
array(3) { [0]=> string(0) "" [1]=> string(0) "" [2]=> string(0) "" }