Delete row from MySQL table when I press button Delete - php

Question

I need to make cancel booking of room for one user who can see all his room booked.
The problem is It shows the booked room for the user, but the delete button did not work correctly.
I have snapshot of my db here and screenshot here.please any help?
Thanks.
Here is my php code for show booking data and the delete part in manage.php
<?php
session_start();
$connection = mysqli_connect('localhost', 'root', '', 'webapp');
global $connection;
$user_id="";
if(!isset($_SESSION['login_ID'])) {
header('Location: login.php');
die();
} else {
$user_id= $_SESSION['login_ID'];
}
$secondQueryStmt = "SELECT * FROM `booking` where UserID='".$user_id."'";
$query = mysqli_query($connection, $secondQueryStmt);
if(isset($_POST['BookingID'])) {
$boking_id = $_POST['BookingID'];
if(isset($_POST['delete_id'])){
$query = mysqli_query($connection, "DELETE FROM booking where BookingID= '".$boking_id."'");
}
}
?>
here is my form html in the same page also.
<article id="content" style="height:810px; background-color:white">
<div class="box1">
<!--content herer-->
<table class="wrapper" style="text-align:center">
<tr>
<th class="track animated fadeInUp">Room</th>
<th class="title animated fadeInUp">Quantity</th>
<th class="speaker animated fadeInUp">CheckIn Date</th>
<th class="day animated fadeInUp">CheckOut Date </th>
<th class="time animated fadeInUp"></th>
</tr>
<?php while($fetcher = mysqli_fetch_array($query)): ?>
<tr>
<td><?=$fetcher['Type']?></td>
<td><?=$fetcher['Quantity']?></td>
<td><?=$fetcher['CheckInDate']?></td>
<td><?=$fetcher['CheckOutDate']?></td>
<td><td><form action="manage.php" method= "post" />
<input type="hidden" name="b_id" value="<?=$fetcher['BookingID'] ?>"/>
<input type="button" class="btnSm hvr-fade lightRed" name="delete_id" value="Cancel Booking"/>
</form></td></tr>
<?php endwhile; ?>
</table>
</div>
</article>

Answer 1

Look at this statement here,
<input type="hidden" name="b_id" value="<?=$fetcher['BookingID'] ?>"/>
^ you've named it b_id, not BookingID
So change
$boking_id = $_POST['BookingID'];
to
$boking_id = $_POST['b_id'];
And use mysqli_affected_rows() function to check how many rows are affected from this UPDATE operation.
Here's the reference:
http://php.net/manual/en/mysqli.affected-rows.php
So your code should be like this:
// your code
$query = mysqli_query($connection, $secondQueryStmt);
if(isset($_POST['delete_id'])){
$boking_id = $_POST['b_id'];
mysqli_query($connection, "DELETE FROM booking where BookingID= '".$boking_id."'");
if(mysqli_affected_rows($connection)){
// success
}else{
// failure
}
}