Hello guys, Here i am having another error.
Error is undefined index on my products.php page i tried everything i can to define it but if i define it code doesn't work
so here's the code
products.php:

<?php
    require_once $_SERVER['DOCUMENT_ROOT'].'/Online Store/core/init.php';           //Including database path stored in init.php
    include 'includes/head.php';                                                    //Including header
    include 'includes/navigation.php';                                              //Including Navigation bar

    $sql = "SELECT * FROM products WHERE deleted = 0";
    $presults = $db->query($sql);
    $product = mysqli_fetch_assoc($presults);

    // Featured product
    if (isset($_GET['featured'])) {
        $id = (int)$_GET['id'];                    //this where i am getting error
        $featured = (int)$_GET['featured'];
        $featuredSql = "UPDATE `products` SET `featured` = '$featured' WHERE `products`.`id` = '$product[id]' ";
        $db->query($featuredSql);

    }
?>

<h2 class="text-center">Products</h2><hr />

<table class="table table-bordered table-condensed table-striped">
    <thead>
        <th></th>
        <th>Product</th>
        <th>Price</th>
        <th>Category</th>
        <th>Featured</th>
        <th>Sold</th>
    </thead>
    <tbody>
        <?php while($product = mysqli_fetch_assoc($presults)): ?>
            <tr>
                <td>
                    <a href="products.php?edit=<?= $product['id']; ?>" class="btn btn-xs btn-default"><span class= " glyphicon glyphicon-pencil"></span></a>
                    <a href="products.php?delete=<?= $product['id']; ?>" class="btn btn-xs btn-default"><span class= " glyphicon glyphicon-remove-sign"></span></a>

                </td>
                <td><?= $product['title']; ?></td>
                <td><?= money($product['price']) ?></td>
                <td></td>
                <td><a href="products.php?featured=<?= (($product['featured'] == 0)?'1':'0'); ?>&id =<?= $product['id']; ?>" class=" btn btn-sx btn-default">
                    <span class=" glyphicon glyphicon-<?= (($product['featured'] == 1)?'minus':'plus'); ?>"></span>

                </a>&nbsp <?= (($product['featured'] == 1)?'Featured':''); ?></td>
                <td></td>
            </tr>
        <?php endwhile; ?>   
    </tbody>
</table>

<?php
    include 'includes/footer.php';                                                  //Including footer
?>

And this is how i tried to define it :

// This is 1st try

if (isset($_GET['featured']) && isset($_GET['id'])) {
        $id = (int)$_GET['id'];
        $featured = (int)$_GET['featured'];
        $featuredSql = "UPDATE `products` SET `featured` = '$featured' WHERE `products`.`id` = '$product[id]' ";
        $db->query($featuredSql);

    }


// This is 2nd try
$id = '';
if (isset($_GET['featured'])) {
        $id = (int)$_GET['id'];
        $featured = (int)$_GET['featured'];
        $featuredSql = "UPDATE `products` SET `featured` = '$featured' WHERE `products`.`id` = '$product[id]' ";
        $db->query($featuredSql);

    }

In the first try error disappered but featured didn't update in database
i also tried to echo $id and var_dump$id but that didn't show anything

In your first attempt the error would have gone away because the code in the loop wasn't getting called.
isset($_GET['id']) failed and so nothing else happened.
Double check the URL parameters you are passing in, id isn't one of them.

I don't find any errors in URL it looks fine to me i am passing id too $product['id'] could you illustrate what you mean

Var_dump $_GET['id'] and you'll see it isn't a value.
What is the URL you are calling? Can you at least out the parameters here?

var_dump ($_GET ['id']); is giving null and so is the var_dump ($_GET['featured']) but features works fine only id doesn't work and the URL i am calling is checking featured and getting id

<a href="products.php?featured=<?= (($product['featured'] == 0)?'1':'0'); ?>&id =<?= $product['id']; ?>" class=" btn btn-sx btn-default">
                    <span class=" glyphicon glyphicon-<?= (($product['featured'] == 1)?'minus':'plus'); ?>"></span>

                </a>

is something wrong in url and why doesn't id work if featured can. please illustrate what you are saying and thank you in advance

Please help me someone.

Stop bumping your posts, and show a little patience.