<?php $left = '0h : 59m : 0s'; $right = '0h : 30m : 0s'; $lookup = [ -1 => 'less', 0 => 'equal', 1 => 'more' ]; $format = '%dh : %dm : %ds'; $comparison = sscanf($left, $format) <=> sscanf($right, $format); echo $comparison . ' -> ' . $lookup[$comparison];
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