<?php function get_time_difference($time1, $time2) { $time1 = strtotime("1980-01-01 $time1"); $time2 = strtotime("1980-01-01 $time2"); if ($time2 < $time1) { $time2 += 86400; } return date("H:i", strtotime("1980-01-01 00:00") + ($time2 - $time1)); } echo get_time_difference("10:25", "22:40"); // 12:15 ?>
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