Question

我正在尝试为酒店建立一个预订系统，我现在可以插入一个新的预订，但我希望它在预订日期检查房间是否免费！

数据库架构

 CREATE TABLE IF NOT EXISTS `bookings` (
`booking_id` int(10) NOT NULL AUTO_INCREMENT,
`user_id` int(10) NOT NULL,
`room_no` int(10) NOT NULL,
`hotel_id` int(10) NOT NULL,
`from_time` date DEFAULT NULL,
`to_time` date DEFAULT NULL,
 PRIMARY KEY (`booking_id`),
KEY `FK_Users_id` (`user_id`),
KEY `user_id` (`user_id`),
KEY `user_id_2` (`user_id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_bin AUTO_INCREMENT=15 ;

腓

    include_once 'DbConnection.php';
$room_no = $_POST['roomNo'];
$hotel_id = $_POST['hotel_id'];
$from_date = $_POST['from'];
$to_date = $_POST['to'];
$user_id = $_SESSION['id'];
$date_checker_sql ="SELECT * FROM bookings WHERE hotel_id = $hotel_id";
$result = $mysqli->query($date_checker_sql);

while($row = $result->fetch_object()){
echo $row->booking_id;
if($row->from_time <= $from_date && $row->to_date >= $to_date && $row->room_no = $room_no){
$message = "booking if works.";
echo "<script type='text/javascript'>alert('$message');</script>";
}else{ $message = "something wrong";
echo "<script type='text/javascript'>alert('$message');</script>";
}
}
$insert_post_sql = "INSERT INTO bookings
                SET room_no='$room_no', hotel_id='$hotel_id', from_time='$from_date', to_time='$to_date', user_id='$user_id'
                ";

if ($mysqli->query($insert_post_sql)) {
 $message = "hotel created - logging you out sir.";
echo "<script type='text/javascript'>alert('$message');</script>";
//header("location: index.php");
}else{
echo 'something went wrong';

现在，它预订酒店，因为插入sql不在while循环中。但是当它检查时，它从不提醒消息＆＃34;预订如果工作＆＃34; - 我只是无法弄清楚如何正确构建它。非常感谢所有帮助！

php mysqli中的日期检查器

0 个答案: