discuz3.0 获取fromhash方法

function get_esquire_com_cn_formhash() {
    $uid = 8;
    $username = 'Imuser';
    $timestamp = time();
    /* ./config/config_default.php配置中的信息*/
    $authkey = 'sdeefffffffffdererererer'; //$_config['security']['authkey']的值
    $config['cookie']['cookiepre'] = 'aswe_';
    $config['cookie']['cookiedomain'] = '';
    $config['cookie']['cookiepath'] = '/';
    /**/
    $cookiepre = $config['cookie']['cookiepre'] . substr(md5($config['cookie']['cookiepath'] . '|' . $config['cookie']['cookiedomain']), 0, 4) . '_';
    $cookiesalt = $_COOKIE[$cookiepre . 'saltkey'];
    $authkey = md5($authkey . $cookiesalt);
    $formhash = substr(md5(substr($timestamp, 0, -7) . $username . $uid . $authkey), 8, 8);
    return $formhash;
}