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<?php
/**
* Calc shift length in format 12:23h.
* @param Shift $shift
*/
function shift_length($shift) {
$length = round(($shift['end'] - $shift['start']) / (60 * 60), 0) . ":";
$length .= str_pad((($shift['end'] - $shift['start']) % (60 * 60)) / 60, 2, "0", STR_PAD_LEFT) . "h";
return $length;
}
?>
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