LinkStack/app/Functions/externalfiles.php

<?php

function external_file_get_contents($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:80.0) Gecko/20100101 Firefox/80.0');
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
}

function urlr($path) {
    $url = str_replace(['http://', 'https://'], '', url(''));
    return "//" . $url . "/" . $path;
}