Question

I am stuck on this code. I am making a web page and on the side there is a place for a cart. And with the you should be able to click on an item and add it to cart. Well I am having trouble getting it to add it to cart. Can someone help me understand what I should be doing. I have been working on it for a few days and no matter what I am doing nothing is working. If i get the code to show you have 0 in your cart it wont add anything if i try to put it in the cart.

  <h1>Cart Contents?</h1>
    <div class="p2">
<?php
// Get all the categories and
// link them to category.php.

// Define and execute the query:
$q = 'SELECT category_id, category FROM categories ORDER BY category';
$r = mysqli_query($dbc, $q);

// Fetch the results:
while (list($fcid, $fcat) = mysqli_fetch_array($r, MYSQLI_NUM)) {

    // Print as a list item.
    echo "<li><a href=\"category.php?cid=$fcid\">$fcat</a></li>\n";

    if($_SERVER['PHP_SELF']!="CART FILE"){
                echo "<h1>Cart Contents</h1>";
                echo "<div class=\"p2\">";
                $itemCount=X;
                foreach($_SESSION['cart'] as X=>X){

                    for($i=0;$i<count(X);$i++){
                        $itemCount+=X;
                      }

                }
                echo "<a href=\"cart.php\">You have ".$itemCount." total items in your cart.</a>";
                echo "</div>\n";


} // End of while loop.

        ?>
        <h1>Specials?</h1>
        <div class="p2">
            <p>Maybe place specials or new items or related items here.</p>
        </div>

    </div>

    <div class="content">

Ok here is a link to what the cart should do if you look over to the side it should do what that one is doing.
http://www.programmerskit.com/advPHP/ch5/

Answer 1

Shouldn’t

        $itemCount=X;
        foreach($_SESSION['cart'] as X=>X){

                for($i=0;$i<count(X);$i++){
                    $itemCount+=X;
                  }

            }

just be:

$itemCount = count($_SESSION['cart']);

I can’t otherwise figure out what that code is supposed to be doing.

Also, that code that outputs the cart appears to be in a while loop outputting each item category, so you will be displaying the cart multiple times, which I can only assume is not desired functionality.

Also, another poster made a point about the invalid use of X as a constant, which is also a good point.