PHP uses static classes to implement the method of obtaining the client IP address

/**
 * Miscellaneous utility methods.
*/
final class Utils {
 private function __construct() {

 }
 /**
     * Get IP address
     * @return string IP address string
*/
 public static function getIpAddress() {
 return $_SERVER["REMOTE_ADDR"];
 }
}
?>

2. Call

$last_login_ip = Utils::getIpAddress();
?>