I'm making website for Hotel Reservation System. I need help about the query, I was searching through post but i didn't find solution that will work for me.
In my DB i have table booking, with check in and check out date that need to be checked by the query when the user input check in and check out for specified room. Here is my query:
SELECT * FROM booking WHERE room='$room' and ((checkin>='$cIN' and checkout<='$cOUT' )or(checkin<='$cIN' and checkout>='$cOUT'))
'$cIN' and '$cOUT' are the inputs from user for check in and check out.
My query in some cases work, lets say for example the room is booked from 15/03/2017 to 20/03/2017, when the new user input 13/03/2017 to 17/03/2017 then the query dont return any results, and the user can book the same room. So in this case we have 2 users in one room in same interval of time. I need to restrict this kind of reservations. Thanks in advance.
To find an overlap we need to search for items where requested checkin is before an existing checkout AND the requested checkout is after the existing checkin.
-- Return existing bookings that overlap the requested date range
SELECT *
FROM booking
WHERE room = '$room'
and checkin <= '$cOUT' and checkout >= '$cIN'
Simpler than you thought :)
Note that this query will not allow a new booking to checkin at the same time that a previous booking checked out. If your checkin/out fields do no store time then you will need to alter this logic to use <,> instead of <=,>=
this is my logic, the query is to check your checkin date between the checkin date and the checkout date in the database, also check the checkout date between the checkin date and the checkout date in the database. If there is a database row, your checkin or checkout date is not available.
SELECT * FROM reservasi WHERE (
'$checkin' BETWEEN checkin_date AND checkout_date
OR '$checkout' BETWEEN checkin_date AND checkout_date)
-->num_rows
Additionally, if one room class has many rooms then check first room with the class id.
If there is no database row, then room is not available.
SELECT * FROM room WHERE class_id='$class_id' AND status='available'
Related
I want to check if any other room is available between check in and check out date. If a single day also booked between the submitted date, that room should not be included. Image shows the booked room. If I enter check in date like 2016-05-16 and check out date like 2016-05-21 then total no of booked room should be answered as 9 for hotel id=1
My code is like-
='$i' and end_date='$i') and hotel_id='1'");
$rows=mysql_fetch_row($sel);
$count[]=$rows[0];
echo ''.$i.$rows[0];
}
foreach($count as $c)
{
echo "---".$c;
}
?>
I don't know the SQL you are using so I will do a general approach trying to help you.
What you need there is the SQL BETWEEN Operator, in partitucular its negative, NOT BETWEEN in order to check if the room is empty.
The logic would be, I want to query every empty room, this means that today's date should not be between check in and check out dates.
Your query should look something like:
SELECT * FROM TableName
WHERE NOW() NOT BETWEEN start_date AND end_date;
As a recommendation I suggest you to read How to Ask to get more accurate help in the future.
Hope this helped you :)
I'm working on a reservation/booking system for a small hotel. I'm pretty good with PHP but not so good with SQL... I made a form where you enter your information, number of rooms and select arrival date and check-out date using a calendar.
Now everything went good until I got to the point where you have to check which rooms are available and it's giving me a headache. There are 10 rooms you can book.
I currently have one table in MySQL storing the information, dates, booking-ID and room-ID/number.
How would you make the SQL for checking which rooms that are available and not?
Should it look something like
"SELECT * FROM bookings WHERE checkinDate >= '$formCheckin'
AND checkoutDate <= '$formCheckout' "
and then get the roomID and count them?
Any help is very appreciated!
If you want to know if a room is available during a period, then the logic looks like:
SELECT r.*
FROM rooms r
WHERE NOT EXISTS (SELECT 1
FROM bookings b
WHERE b.roomid = r.roomid AND
b.checkinDate <= $formCheckOut AND
b.checkoutDate >= '$formCheckIn
);
I'm not sure if the equality comparison is needed for both of these. The logic is that a room is available if there are no bookings that start before the checkout date and that end after the check in date.
However, for ten rooms, I might suggest that you just keep a table of each room by day, say for the next ten years (add another year once per year). Such a table isn't very big and it is probably easier to understand how to use it. Plus, you can handle things like a couple reserve the room for a week, but only one person is in the room for the first 3 days.
I'm still leanring PHP/MySQL but have learned quite a bit thanks to codies on StackOverflow. I'm trying to setup a sort of room reservations system using two tables:
SETUP:
Room price table: Has, prices for a type room a client may want to rent as well as the dates (day of week) they wish to use it. Pricing varies based on day of the week and per room.
I've setup a different table for each room type as each room type carries different pricing for each day of the week. So, There is an Alpha room table, Bravo room, etc. Within Alpha table are headers for the days of the week with pricing pre-entered into the rows.
Client info table: Has the name, address, date of room use, etc data for the specific client.
EXAMPLE:
Alpha-room price table:
Sun = $100; Mon = $200; Tue=$300 and so on.
Bravo-room price table:
Sun = $100; Mon = $200; Tue=$300 and so on.
Client data table:
ClientName; date-of-room-use; address; day_subtotal; grand_total.
QUESTION:
I'm trying to find PHP code that will:
look at the date of room use in the client data table,
look up the associated cost for that date in the specific room pricing table,
record that unit cost in the day subtotal of the client data table
and sum a grand total in the grand total row of the client data
table (assuming the room may be used more than one day by the
customer).
I know there's something to do with join but I'm finding it difficult to grasp the concept and, if someone can demonstrate using this example, I think I will have a better understanding of how to work this sort of transaction.
Thank you ALL in advance for your suggestions or alternatvie approaches.
First, you should separate your database slightly, you should have four tables. rooms, prices, clients and bookings. Setup somewhat like this...
rooms should have the following fields: id, name and description.
prices should have the following fields: id, price, room_id and day.
clients should have the following fields: id and whatever else you want to store on the user, such as first and last names, phone number or whatever.
bookings should have the following fields: id, client_id, room_id, started_at and ended_at. Preferably the started_at and ended_at fields will be an int, filled with PHP's time() method.
You can add any extra fields you want/need to the tables.
With the tables separated out like this, you will be able to properly query the database. So to answer your questions...
look at the date of room in use...
You can now query to see if a room is in use on a specific date by doing the following...
<?php
$selectedDate= mktime(); // Create a UNIX timestamp based on the day the user selected.
$query = "SELECT r.name, r.description
FROM rooms r, bookings b
WHERE b.room_id = r.id
AND b.started_at < $selectedDate
OR b.ended_at > $selectedDate";
$result = $pdo->query($query);
?>
Look up cost for that date
<?php
$selectedDate = mktime() // Create a UNIX timestamp based on the day the user selected
$dayOfWeek = Date('N', $selectedDate); // This will give the numerical day of the week.
$query = "SELECT price
FROM prices
WHERE room_id = $roomId
AND day = $dayOfWeek";
$result = $pdo->query($query);
?>
Record that unit cost in the client table
Doing this is just silly on account of already having the information in another table. Never recreate the same information in a database. If you are, you have built your database incorrectly.
Grand total in the customer table
Again, silly... don't recreate data...
Though, to find that information out, you would first need to do a query on the bookings table, and see the start and end date for which the user will be occupying the room.
Do a calculation on how long the client will be in the room for, (ended_at - started_at) / 86400, (86400 is the number of seconds in a day) that will give the number of days the client is in the room for.
Now that you know which days, and how long the client will be in the room, you can dynamically create a sql call to select the days of the week you need, remember Date('N', $timeStamp) will give you the numerical day of the week for a given timestamp.
Then it is just a matter of doing simple addition.
I have given you the basics here, You can modify the query from answer one to show you if a room is available to be booked within the time frame the user asked for.
I hope that covers everything you asked about...
I have problem thinking this trough with PHP & Mysql. I have read How to implement check availability in hotel reservation system and some more but they seem different.
I have to make a reservation system on which a converence room can be booked for 6hours minimal, so when a user make a reservation on a date e.g 24/04/2012 he then selects the start time of the rental (00:00-06:00, 06:00-12:00, 12:00-18:00,18:00-24:00). And the total number of hours(6,12,18 etc..) the user wants to rent the room.
The date is stored as a integer(timestamp).
I have two problems with this; I don´t know how to receive all possible days of a month on which the room is still up for reservation and how to check if a new reservation is possible.
I know how to calculate the start date and end date on the users input but I cant find the correct mysql query or php check for availability.
It's probably really simple but somehow because the end date is always variable I just cant find the answer.
Thanks in advance guys!
EDIT Table structure: reservations
id int(11)
user_id int(11)
reservation_name varchar(255)
start_date int(11)
end_date int(11)
I believe reservations is the only one relevant
You'll find it's pretty difficult to generate a list of available days in MySQL. I recommend instead that you select an ordered list of booked days within your desired month, then loop over all days of that month in PHP skipping the day if it matches the next booked day from your MySQL query. The answer to this question will help you to build the dates over which you want to loop in PHP. In pseudocode:
$booked_days = sql(select all booked days in month order by day);
for each $day in month {
if $day != current($booked_days) {
// $day is not booked
} else advance_next($booked_days);
}
To check if a new reservation is possible, you might want to have a look at my answer to a very similar question earlier today.
This brilliant simple MySQL query must do the trick:
Checking for overlapping car reservations
This solution is only for "dates" but You can simply aggregate it with additional "hours"
I have been searching for an answer to this dilemma but found nothing. I was hoping you could help to find out what I am doing wrong.
I have a mysql query that selects only apartmens available as follow:
SELECT *
FROM apartments
WHERE apartment_ID NOT IN (SELECT apartment_ID
FROM bookings
WHERE startDate <= '$endingdate'
AND endDate >= '$startingdate')
The problem is that this query is not considering that i.e. departure day is an half day and it is available.
To explain better:
if table "booking" has a booking ending on 16-01-2011 and the search is from the 16-01-2011. The apartment should be available because that is an "half" day (the day of departure). The query seems to not consider this and does not show the apartment.
Please could you help?
Francesco
I'm not that familiar with MySQL data types , but are you sure that startDate and endDate are not stored with a time part as well. If that's the case then "16-01-2011 16:25" would not be less than or equal to "16-01-2011".
Take out the = signs from your sub query, or at least the last one if a place vacated on a date is always available on that date. That should check for apartments being vacated on the requested date. Also make sure that your data is escaped.
If availabilty depends on time then you will need to change your date fields to datetimes.