Update the quantity of cart using PHP & SQL - php

Question

I've this problem in which I can't update the cart for some reason. I've looked for many solutions to see if they can solve my problem but no luck. I've 2 files one called cart.php which contains the form and a updatebasket.php file which contains query.
Cart file
<?php
$count = 0;
while ($count < $numrow)
{
$row = $results -> fetch_assoc();
extract($row);
echo"<div>";
echo"<div class='recommended_games'>";
echo "<img src='images/".$gameIMG."' />";
echo "</div>";
echo '<div class="price_tag">';
echo '<div class="price_tag">£'.$gamePrice. '</div>';
echo'</div>';
echo '<div id="update_form"><form action="updatebasket.php" method="POST" name="updateform">';
echo '<input type="text" value="1" name="quantity" id="quantity" />';
echo '<input type="hidden" value="'.$gameID.'" name='.$gameID.' id="gameid" />';
echo '<input type="submit" value="update" />';
echo '</form>';
echo '</div>';
echo"<img class='box1' src='Images/Grey-Banners.png' />";
echo"</div>";
$count = $count + 1;
}
?>
updatebasket file
<?php
session_start();
require "dbconnect.php";
$memberID = $_SESSION['id'];
$quantity = $_POST['quantity'];
$gameID = $_POST['gameid'];
mysqli_autocommit($con,FALSE);
$connect->query($query);
$query = "UPDATE basket SET quantity = ".$quantity." WHERE gameid = ".$gameID." AND id = ".$memberID."";
$results = $connect->query($query);
mysqli_commit($con);
header('Location: cart.php');
?>

Answer 1

Change cart.php to this:
<?php
$count = 0;
while ($count < $numrow)
{
$row = $results -> fetch_assoc();
extract($row);
echo"<div>";
echo"<div class='recommended_games'>";
echo "<img src='images/".$gameIMG."' />";
echo "</div>";
echo '<div class="price_tag">';
echo '<div class="price_tag">£'.$gamePrice. '</div>';
echo'</div>';
echo '<div id="update_form"><form action="updatebasket.php" method="POST" name="updateform">';
echo '<input type="text" value="1" name="quantity" id="quantity" />';
echo '<input type="hidden" value="'.$gameID.'" name="gameid" id="gameid" />';
echo '<input type="submit" value="update" />';
echo '</form>';
echo '</div>';
echo"<img class='box1' src='Images/Grey-Banners.png' />";
echo"</div>";
$count = $count + 1;
}
?>
The big change is this:
BEFORE:
echo '<input type="hidden" value="'.$gameID.'" name='.$gameID.' id="gameid" />';
AFTER:
echo '<input type="hidden" value="'.$gameID.'" name="gameid" id="gameid" />';
php uses the name attribute as the key for post and get, not id.
id is used by javascript, jquery (also javascript), css, and probably a few other things.
But in forms, name is the one you want for the post and get key.