cetvel böyle mi
$array = array(
$_POST['schedule_date'],
$_POST['schedule_time'],
$_POST['schedule_place'],
$_POST['schedule_address'],
);
foreach($array as $a){
$sav = $db->prepare("INSERT INTO schedule set date = ?, time = ?, location_title = ?, location_address = ?, item_id = ?");
$sav->execute(array($a[0],$a[1],$a[2],$a[3],$last_id));
}