Small script to check if the Referer-bug is still existent at fliplife.com

fliplife-referer-bug.php

<?php

/**
 * Send HTTP request to "fliplife.com" and return the HTTP status.
 * 
 * @param  array $headers Associative array with HTTP request headers.
 * @throws Exception      If no HTTP status can be found.
 * @return integer        HTTP status.
 */
function requestFliplife(array $headers)
{
    $socket = fsockopen('fliplife.com', 80);

    fwrite($socket, "GET / HTTP/1.1\r\n");
    foreach ($headers as $name => $value) {
        fwrite($socket, "{$name}: {$value}\r\n");
    }
    fwrite($socket, "\r\n");

    $response = '';
    while (($line = fgets($socket)) !== false) {
        $response .= $line;
    }

    fclose($socket);
    if (!preg_match('/HTTP\/1.[01] (?<httpStatus>\d+)/', $response, $matches)) {
       throw new Exception('Got invalid response. No HTTP status found.');
    }

    return (int)$matches['httpStatus'];
}

/**
 * HTTP request configuration.
 */

$requests = array(
    'Request without Referer' => array(
        'Host'       => 'fliplife.com',
        'Connection' => 'close'
    ),
    'Request with empty Referer' => array(
        'Host'       => 'fliplife.com',
        'Connection' => 'close',
        'Referer'    => ''
    ),
    'Request with Referer' => array(
        'Host'       => 'fliplife.com',
        'Connection' => 'close',
        'Referer'    => 'http://www.adcloud.com/'
    )
);

/**
 * Execute all configured requests and validate their HTTP response status.
 */

echo PHP_EOL;
foreach ($requests as $description => $headers) {
    echo str_pad($description, 30, ' ', STR_PAD_LEFT) . ': ';
    echo requestFliplife($headers) === 200 ? 'Success' : 'Failed';
    echo PHP_EOL;
}

if (stripos(PHP_OS, 'WIN') === false) echo PHP_EOL;