how to Insert Primary key instead of name column in database - php

Question

I am developing a hotel reservation system in PHP using MySQL.
I want to know how to insert primary key value instead of name in the database. user select hotel name from drop down , instead of putting hotel name in database I want to insert hotel_id.
where I have a page named with ADD New room where the user will add new rooms.
table related to add new room page is: room in MySQL
in that page, I have a form where the user has to select hotel name from a select tag which is populated dynamically from a database table named as hotels.
I want to insert hotel_id which is a foreign key in room table correspondence to the selected hotel name
Below is the code which shows select tag populated with the hotel name.
<div class="form-group">
<label class="form-label">Hotel Name</label>
<select class="form-control" name="name" id="name">
<?php
$sel_cus = "select * from hotels ";
$res_cus = mysqli_query($connection, $sel_cus);
while ($row = mysqli_fetch_array($res_cus)) {
?>
<option value="<?php echo $row['hotel_name']; ?>"><?php echo $row['hotel_name']; ?></option>
<?php
}
?>
</select>
</div>
when i insert room record in database using below code it insert hotel name instead of hotel_id. I want to insert hotel_id in room table.
Please guide me with code example. Thanks
if (isset($_POST['submit'])) {
$hotel_name = $_POST['name'];
$date = date('m-dd-yy');
$query = "INSERT INTO room (Hotel_Id, date)
VALUES ('$hotel_name ','$date')";
}

Answer 1

You need to use the option value. Currently you are using hotel_name as option value, change this to hotel_id and you should be fine.
<option value="<?php echo $row['hotel_id']; ?>"><?php echo $row['hotel_name'];?></option>