Get wow token price

wowtoken.php

<?php

$price = getTokenPrice();

function getTokenPrice($region = 'EU')
{
    $filename = 'wowtoken.json';
    if (file_exists($filename) && filemtime($filename) > time() - 1200) {
        $content = file_get_contents($filename);
    } else {
        $content = file_get_contents('https://wowtoken.info/wowtoken.json');
        file_put_contents($filename, $content);
    }

    $wowtoken = json_decode($content, true);
    $updateInformation = $wowtoken['update'];

    if (isset($updateInformation[$region])) {
        return $updateInformation[$region]['raw']['buy'];
    }

    return 0;
}