if (empty(#start_time#) || empty(#end_time#)) {
return “”;
}

$start_time = strtotime(str_replace(“/”, “-“, #start_time#));
$end_time = strtotime(str_replace(“/”, “-“, #end_time#));

if ($start_time === false || $end_time === false) {
return “”;
}

$diff_in_seconds = $end_time – $start_time;

if ($diff_in_seconds <= 0) {
return "";
}

$total_hours = round($diff_in_seconds / 3600, 2);
return $total_hours . " שעות";