<?php $arr = ['1 hour 3 mins','2 hours 1 min','5 mins','1 min']; Foreach($arr as $val){ $seconds =0; $temp = explode(" ", $val); Foreach(array_chunk($temp,2) as $part){ $seconds +=strtotime("+" . Implode(" ", $part)) - time(); } Echo $seconds . "\n"; }
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