更改12:00 s到00:00:00 php sql

Currently i have this

$time = $db->get_row("SELECT shift,shiftend FROM schedule2");

                    $curHour = $time->shift;
                    $endHour = $time->shiftend;
                    echo $curHour;
                    echo "<br>";

Currently this exports curhour as 12:00:00 is it possible to change to 00:00:00

Please let me know

greetings

Glenn

if you want to override the value of database then simply make $curHour="00";