php get real IP address

<?php

if ( !empty( $_SERVER&#91;'HTTP_CLIENT_IP'&#93; ) ) { //check ip from share internet

	$ip = $_SERVER&#91;'HTTP_CLIENT_IP'&#93;;

} elseif ( !empty( $_SERVER&#91;'HTTP_X_FORWARDED_FOR'&#93; ) ) { // to check ip is pass from proxy, also could be used &#91;'HTTP_X_REAL_IP '&#93;

	$ip = $_SERVER&#91;'HTTP_X_FORWARDED_FOR'&#93;;

} else {

	$ip = $_SERVER&#91;'REMOTE_ADDR'&#93;;

}

?>

Check real IP address.

More complicated code to get IP address:

<?php

function get_ip_address(){

    foreach (array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key){

        if (array_key_exists($key, $_SERVER) === true){

            foreach (explode(',', $_SERVER&#91;$key&#93;) as $ip){

                $ip = trim($ip); // just to be safe



                if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false){

                    return $ip;

                }

            }

        }

    }

}



public function validate_ip($ip)

{

    if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false)

    {

        return false;

    }



    self::$ip = sprintf('%u', ip2long($ip)); // you seem to want this



    return true;

}







if( ! empty( $_SERVER&#91;'HTTP_X_FORWARDED_FOR'&#93; ) ) { // check for IPs passing through proxies

    $iplist = explode( ',', $_SERVER&#91;'HTTP_X_FORWARDED_FOR'&#93; );

    foreach( $iplist as $ip ) {

        if( $this->validate_ip( $ip ) ) {

            return $ip;

        }

    }

}



?>