Odtnhj

I use this function for get client ip:

 $client = @$_SERVER['HTTP_CLIENT_IP'];

You can see it here.
http://city.ru.xsph.ru/web/

But this address does not match the IP that use other hosts (the correct IP). For example:
https://hidemyna.me/en/ip/

You can use the Yii2 default method available in YI2

Yii::$app->getRequest()->getUserIP()

or if you are looking to save the current user ip into the database table i would recommend you to use the IPbehavior within the model like

public function behaviors() 
 return [
 ...
 'ip' => [
 'class' => IpBehavior::className(),
 'attributes' => [
 ActiveRecord::EVENT_BEFORE_INSERT => ['created_ip', 'updated_ip'],
 ActiveRecord::EVENT_BEFORE_UPDATE => 'updated_ip',
 ],
 ]
 ...
 ];
 

Or like this. where value can be a string or an anonymous function that will return a string.

public function behaviors() 
 return [
 ...
 'ip' => [
 'class' => IpBehavior::className(),
 'createdIpAttribute' => 'created_ip',
 'updatedIpAttribute' => 'updated_ip',
 'value' => '127.0.0.1',
 ]
 ...
 ];

I think to get client IP address you have to use this code:

 Yii::$app->request->userIP

The prefered way of getting client ip is with Yii::$app->request-remoteIp

This method uses either $_SERVER['REMOTE_ADDR'] or ip headers (like X-Forwarded-For) that can be added by load balencers or proxy services.

there are however still situations where your public ip (https://hidemyna.me/en/ip/) and the ip that your appication is showing (http://city.ru.xsph.ru/web/) will be different - if you're on the same network as your app for example