Get IP

function getRealIpAddr(){
    if (!empty($_SERVER['HTTP_CLIENT_IP'])) {   //check ip from share internet
      $ip=$_SERVER['HTTP_CLIENT_IP'];
    } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {  //to check ip is pass from proxy
      $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
    } else {
      $ip=$_SERVER['REMOTE_ADDR'];
    }
    return $ip;
}