Yii2 Yii::$app->request->userIP 在 ELB 下没有给出正确的 IP 地址

Question

I am unable to get User IP address in Yii2 application inside ELB but without ELB its working fine. I have also try below code

if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
   $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}

but this is also failed sometime, below is the error

ERROR 1 => The value "223.190.123.220, 66.102.6.83" is not a valid IP address.
ERROR 2 => The value "2402:3a80:10d3:e19f:e7e1:8c35:fb4a:b49c, 66.102.6.89" is not a valid IP address.

It will be better if someone suggest me any solution within Yii2.

Answer 1

use this function it will help you

  public function RealIP() {
    $ip = false;
    $seq = array('HTTP_CLIENT_IP',
        'HTTP_X_FORWARDED_FOR'
        , 'HTTP_X_FORWARDED'
        , 'HTTP_X_CLUSTER_CLIENT_IP'
        , 'HTTP_FORWARDED_FOR'
        , 'HTTP_FORWARDED'
        , 'REMOTE_ADDR');

    foreach ($seq as $key) {
        if (array_key_exists($key, $_SERVER) === true) {
            foreach (explode(',', $_SERVER[$key]) as $ip) {
                if (filter_var($ip, FILTER_VALIDATE_IP) !== false) {
                    return $ip;
                }
            }
        }
    }
}