Fortnite Item Shop

<?php
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
$data = @json_decode(@file_get_contents('https://fortnite-public-api.theapinetwork.com/prod09/store/get?language=en'), true);

if (!$data || !$data['items'])
{
    http_response_code(504);
    die();
}

?><!DOCTYPE html>
<html>
    <head>
        <title>Fortnite Item Shop</title>
        <link rel="stylesheet" href="fortnite.css?<?php echo filemtime('fortnite.css'); ?>">
    </head>
    <body>
        <header>
            <h1>Item Shop</h1>
            <time><?php echo date('Y-m-d', $data['lastupdate']); ?></time>
        </header>
        <main>
<?php

foreach ($data['items'] as $item)
{
    DisplayItem($item);
}

function DisplayItem($item)
{
    echo '          <figure>'.PHP_EOL.'             <img src="'.$item['item']['images']['background'].'">'.PHP_EOL.'                <figcaption data-price-vbucks="'.$item['cost'].'">'.$item['name'].'</figcaption>'.PHP_EOL.'         </figure>'.PHP_EOL;
}?>     </main>
    </body>
</html>