Таблица в моем коде не отображается, Есть идеи почему?

<?php
require_once 'core/init.php';
include 'includes/head.php';
include 'includes/navigation.php';
include 'includes/headerpartial.php';

if($cart_id != ''){
$cartQ = $db->query("SELECT * FROM cart WHERE id = '{$cart_id}'");
$result = mysqli_fetch_assoc($cartQ);
$items = json_decode($result['items'],true);
$i = 1;
$sub_total = 0;
$item_count = 0;

}

?>

<div class="col-md-12">
<h2 class="text-center">My Shopping Cart</h2><hr>
<div class="">
<?php if($cart_id == ''): ?>
<div class="" >
<p class="text-center text-danger">
Your shoppping cart is empty!
</p>
</div>
<?php else: ?>
<table class="table table-bordered table-condensed table-striped">
<thead><th>#</th><th>Item</th><th>Price</th><th>Quantity</th><th>Size</th><th>Sub Total</th></thead>
<tbody>
<?php
foreach($items as $item){
$product_id = $item['id'];
$productQ = $db->query("SELECT * FROM products WHERE id = '{$product_id}'");
$product = mysqli_fetch_assoc($productQ);
$sArray = explode(',',$product['sizes']);
foreach($sArray as $sizeString){
$s = explode(':',$sizeString);
if($s[0] == $item['size']){
$available = $s[1];
}
}
?>
<tr>
<td><?=$i;?></td>
<td><?=$product['title'];?></td>
<td><?=money($product['price']);?></td>
<td><?=$item['quantity'];?></td>
<td></td>
<td></td>
</tr>
<?php } ?>
</tbody>
</table>
<?php endif; ?>
</div>
</div>

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

ядро / init.php

<?php
$db = mysqli_connect('127.0.0.1','root','','');
if(mysqli_connect_errno()) {
echo 'Database connection failed with following errors: '. mysqli_connect_error();
die();
}
session_start();
require_once $_SERVER['DOCUMENT_ROOT'].'/tutorial/config.php';
require_once BASEURL.'helpers/helpers.php';

$cart_id = '';
if(isset($_COOKIE[CART_COOKIE])){
$cart_id = sanitize($_COOKIE[CART_COOKIE]);
}

if(isset($_SESSION['SBUser'])){
$user_id = $_SESSION['SBUser'];
$query = $db->query("SELECT * FROM users WHERE id = '$user_id'");
$user_data = mysqli_fetch_assoc($query);
$fn = explode(' ', $user_data['full_name']);
$user_data['first'] = $fn[0];
$user_data['last'] = $fn[1];
}

if(isset($_SESSION['success_flash'])){
echo '<div class="bg-success"><p class="text-success text-center">'.$_SESSION['success_flash'].'</p></div>';
unset($_SESSION['success_flash']);
}

if(isset($_SESSION['error_flash'])){
echo '<div class="bg-danger"><p class="text-danger text-center">'.$_SESSION['error_flash'].'</p></div>';
unset($_SESSION['error_flash']);
}

?>

add_cart.php

<?php
require_once $_SERVER['DOCUMENT_ROOT'].'/tutorial/core/init.php';
$product_id = sanitize($_POST['product_id']);
$size = sanitize($_POST['size']);
$available = sanitize($_POST['available']);
$quantity = sanitize($_POST['quantity']);
$item = array();
$item[] = array(
'id' => $product_id,
'size' => $size,
'quantity' => $quantity,
);

$domain = ($_SERVER['HTTP_HOST'] != 'localhost')?'.'.$_SERVER['HTTP_HOST']:false;
$query = $db->query("SELECT * FROM products WHERE id = '{$product_id}'");
$product = mysqli_fetch_assoc($query);
$_SESSION['success_flash'] = $product['title']. ' was added to your cart.';

//check to see if the cart cookie exists.
if($cart_id != ''){
$cartQ = $db->query("SELECT * FROM cart WHERE id = '{$cart_id}'");
$cart = mysqli_fetch_assoc($cartQ);
$previous_items = json_decode($cart['items'],true);
$item_match = 0;
$new_items = array();
foreach ($previous_items as $pitems) {
if($item[0]['id'] == $pitem['id'] && $item['size'] == $pitem['size']){
$pitem['quantity'] = $pitem['quantity'] + $item[0]['quantity'];
if($pitem['quantity'] > $available){
$pitem['quantity'] = $available;
}
$item_match = 1;
}
$new_items[] = $pitem;
}
if($item_match != 1){
$new_items = array_merge($item,$previous_items);
}
$items_json = json_encode($new_items);
$cart_expire = date("Y-m-d H:i:s", strtotime("+30 days"));
$db->query("UPDATE cart SET items = '{$items_json}', expire_date = '{$cart_expire}' WHERE id = '{$cart_id}'");
setcookie(CART_COOKIE,'',1,'/',$domain,false);
setcookie(CART_COOKIE,$cart_id,CART_COOKIE_EXPIRE,'/',$domain,false);
}else{
//add the cart to the database and set cookie
$items_json = json_encode($item);
$cart_expire = date("Y-m-d H:i:s",strtotime("+30 days"));
$db->query("INSERT INTO cart (items,expire_date) VALUES ('{$items_json}','{$cart_expire}')");
$cart_id = $db->insert_id;
setcookie(CART_COOKIE,$cart_id,CART_COOKIE_EXPIRE,'/',$domain,false);
}
?>

config.php

<?php
define('BASEURL', $_SERVER['DOCUMENT_ROOT'].'/Tutorial/');
define('CART_COOKIE','SBwi72UckdsknEg2');
define('CART_COOKIE_EXPIRE',time() + (86400 * 30));
?>

Я должен увидеть таблицу на своей странице, но вместо этого я вижу это https://i.imgur.com/UvAKY3p.png

Я полностью потерян после нескольких часов возни с кодом.

* когда я удаляю оператор «else» в середине кода, появляется таблица, но она должна быть там.

Спасибо всем заранее.