Simple shopping cart not working - undefined index

[CherryLips]

I am building a shopping cart with three tables in one database and when I am trying to pass the quantity of an item to my product_handler file I am getting an undefined index error regarding my variable QTY.

 

I thought this error was due to the name being typed incorrectly because that's when I've seen this before, but I can't figure out why this isn't working.

 

Here is my error:

 

Notice: Undefined index: QTY in C:\xampp\htdocs\xyzlabs3\product_handler.php on line 4

 

I have attached the product page and the product_handler page and I'm hoping someone can help.

product.php

product_handler.php

[alphamoment]

Perhaps try creating the qty as a variable.

 

<?php
  session_start();
  
  $QTY=$_POST['qty'];
  
  $conn = mysqli_connect("localhost","root","","skel");
  $sql = "INSERT INTO cart VALUES (" . session_id() . ", "NOW()", "$QTY;

Something like this.

Edited May 11, 2014 by alphamoment

[mac_gyver]

your form field is named qty. you must use the same exact name (capitalization) in your php code - $_POST['qty']

[CherryLips]

Does it matter if it is called QTY in my database table? I changed the name of the form field to QTY and its working. Thanks!

Edited May 12, 2014 by CherryLips