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     function getIp(){

        if (getenv('HTTP_CLIENT_IP'))
        {  
            $ip = getenv('HTTP_CLIENT_IP');
        } elseif (getenv('HTTP_X_FORWARDED_FOR'))
        {  
            list($ip) = explode(',', getenv('HTTP_X_FORWARDED_FOR'));
        } elseif (getenv('REMOTE_ADDR'))
        {  
            $ip = getenv('REMOTE_ADDR');
        }  
        else
        {
            $ip = $_SERVER['REMOTE_ADDR'];
        }
        return $ip;
    }

  static  public function getIp() {
    // Gets the default ip sent by the user
    if (!empty($_SERVER['REMOTE_ADDR'])) {
      $direct_ip = $_SERVER['REMOTE_ADDR'];
    }
    // Gets the proxy ip sent by the user
    $proxy_ip     = '';
    if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
      $proxy_ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
    } else if (!empty($_SERVER['HTTP_X_FORWARDED'])) {
      $proxy_ip = $_SERVER['HTTP_X_FORWARDED'];
    } else if (!empty($_SERVER['HTTP_FORWARDED_FOR'])) {
      $proxy_ip = $_SERVER['HTTP_FORWARDED_FOR'];
    } else if (!empty($_SERVER['HTTP_FORWARDED'])) {
      $proxy_ip = $_SERVER['HTTP_FORWARDED'];
    } else if (!empty($_SERVER['HTTP_VIA'])) {
      $proxy_ip = $_SERVER['HTTP_VIA'];
    } else if (!empty($_SERVER['HTTP_X_COMING_FROM'])) {
      $proxy_ip = $_SERVER['HTTP_X_COMING_FROM'];
    } else if (!empty($_SERVER['HTTP_COMING_FROM'])) {
      $proxy_ip = $_SERVER['HTTP_COMING_FROM'];
    }
    // Returns the true IP if it has been found, else FALSE
    if (empty($proxy_ip)) {
      // True IP without proxy
      return $direct_ip;
    } else {
      $is_ip = preg_match('|^([0-9]{1,3}\.){3,3}[0-9]{1,3}|', $proxy_ip, $regs);
      if ($is_ip && (count($regs) > 0)) {
        // True IP behind a proxy
        return $regs[0];
      } else {
        // Can't define IP: there is a proxy but we don't have
        // information about the true IP
        return $direct_ip;
      }
    }
  }