How do I delete specified address row? - php

Question

My add_id is a primary key. I have displayed all the addresses from the same cus_id but with different add_id. I want to delete a specified row of address but when I press the delete button, the page refresh but no data was deleted. Please look at my codes, thank you.
These are the codes involved, and my db:
<?php
$cus_id = $_SESSION['id'];
//To show all the addresses with the same cus_id
$result2 = mysqli_query($connect, "SELECT * FROM customer_address WHERE cus_id='$cus_id'");
?>
<?php
if (isset($_GET['del'])) {
$add_id = $_GET["id"];
mysqli_query($connect, "DELETE FROM customer_address WHERE add_id='$add_id'");
}
?>
<?php
while ($row1 = mysqli_fetch_assoc($result2)) {
?>
<div class="addrow">
<div class="add_box">
<p id="name_row"><?php echo $row1['name']; ?> </p>
<p id="phone_row"><?php echo $row1['contact']; ?> </p>
<p id="add_row"><?php echo $row1['address']; ?></p>
</div>
<div class="btn_box">
<input type="button" name="editbtn" class="editbtn" value="Edit">
<input type="button" name="deletebtn" class="deletebtn" value="Delete">
<input type="button" name="defaultbtn" class="defaultbtn" value="Set As Default">
</div>
</div>
<?php
}
?>
<?php
if (isset($_GET['del'])) {
$add_id = $_GET["id"];
mysqli_query($connect, "DELETE FROM customer_address WHERE add_id='$add_id'");
echo ("<script>location.href = 'cus_address.php?msg=$msg';</script>");
}
?>

Answer 1

Firstly, you need to change from '$cus_id' to '".$cus_id."' because $cus_id is parameter.
<?php
$cus_id = $_SESSION['id'];
//To show all the addresses with the same cus_id
$sql = "SELECT * FROM customer_address WHERE cus_id='".$cus_id."'";
$result2 = mysqli_query($connect, $sql);
?>
When delete data, you need to add both cust_id and add_id on query follow as below:
<?php
if (isset($_GET['del']))
{
$cust_id = $_GET["id"];
$add_id = $_GET["add_id"];
mysqli_query($conn, "DELETE FROM customer_address WHERE add_id='".$add_id."' and cus_id='".$cust_id."'");
}
?>
Next, check data exist before looping and add "&add_id="
<?php
if(mysqli_num_rows($result2) > 0)
{
while($row1 = mysqli_fetch_assoc($result2))
{
?>
<div class="addrow">
<div class="add_box">
<p id="name_row"><?php echo $row1["name"]; ?> </p>
<p id="phone_row"><?php echo $row1["contact"]; ?> </p>
<p id="add_row"><?php echo $row1["address"]; ?></p>
</div>
<div class="btn_box">
<input type="button" name="editbtn" class="editbtn" value="Edit">
<input type="button" name="deletebtn" class="deletebtn" value="Delete">
<input type="button" name="defaultbtn" class="defaultbtn" value="Set As Default">
</div>
</div>
<?php
}
}else{
//Display... when no data have been found
}
?>