public function ip()
    {
        if (isset($_SERVER["HTTP_CLIENT_IP"])) {
            $ip = $_SERVER["HTTP_CLIENT_IP"];
        } elseif (isset($_SERVER["HTTP_X_FORWARDED_FOR"])) {
            $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
        } elseif (isset($_SERVER["HTTP_X_FORWARDED"])) {
            $ip = $_SERVER["HTTP_X_FORWARDED"];
        } elseif (isset($_SERVER["HTTP_FORWARDED_FOR"])) {
            $ip = $_SERVER["HTTP_FORWARDED_FOR"];
        } elseif (isset($_SERVER["HTTP_FORWARDED"])) {
            $ip = $_SERVER["HTTP_FORWARDED"];
        } elseif (isset($_SERVER["REMOTE_ADDR"])) {
            $ip = $_SERVER["REMOTE_ADDR"];
        } else {
            $ip = getenv("REMOTE_ADDR");
        }
        
        if(strpos($ip, ',') !== false){
            $ip = explode(',', $ip)[0];
        }

        if (!filter_var($ip, FILTER_VALIDATE_IP)) {
            return 'unknown';
        }

        return $ip;
    }
public function ip()
    {
        if (isset($_SERVER["HTTP_CLIENT_IP"])) {
            $ip = $_SERVER["HTTP_CLIENT_IP"];
        } elseif (isset($_SERVER["HTTP_X_FORWARDED_FOR"])) {
            $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
        } elseif (isset($_SERVER["HTTP_X_FORWARDED"])) {
            $ip = $_SERVER["HTTP_X_FORWARDED"];
        } elseif (isset($_SERVER["HTTP_FORWARDED_FOR"])) {
            $ip = $_SERVER["HTTP_FORWARDED_FOR"];
        } elseif (isset($_SERVER["HTTP_FORWARDED"])) {
            $ip = $_SERVER["HTTP_FORWARDED"];
        } elseif (isset($_SERVER["REMOTE_ADDR"])) {
            $ip = $_SERVER["REMOTE_ADDR"];
        } else {
            $ip = getenv("REMOTE_ADDR");
        }
        
        if(strpos($ip, ',') !== false){
            $ip = explode(',', $ip)[0];
        }

        if (!filter_var($ip, FILTER_VALIDATE_IP)) {
            return 'unknown';
        }

        return $ip;
    }
public function ip ( ) { if ( isset ( $ _SERVER [ "HTTP_CLIENT_IP" ] ) ) { $ ip = $ _SERVER [ "HTTP_CLIENT_IP" ] ; } elseif ( isset ( $ _SERVER [ "HTTP_X_FORWARDED_FOR" ] ) ) { $ ip = $ _SERVER [ "HTTP_X_FORWARDED_FOR" ] ; } elseif ( isset ( $ _SERVER [ "HTTP_X_FORWARDED" ] ) ) { $ ip = $ _SERVER [ "HTTP_X_FORWARDED" ] ; } elseif ( isset ( $ _SERVER [ "HTTP_FORWARDED_FOR" ] ) ) { $ ip = $ _SERVER [ "HTTP_FORWARDED_FOR" ] ; } elseif ( isset ( $ _SERVER [ "HTTP_FORWARDED" ] ) ) { $ ip = $ _SERVER [ "HTTP_FORWARDED" ] ; } elseif ( isset ( $ _SERVER [ "REMOTE_ADDR" ] ) ) { $ ip = $ _SERVER [ "REMOTE_ADDR" ] ; } else { $ ip = getenv ( "REMOTE_ADDR" ) ; } if ( strpos ( $ ip , ',' ) !== false ) { $ ip = explode ( ',' , $ ip ) [ 0 ] ; } if ( ! filter_var ( $ ip , FILTER_VALIDATE_IP ) ) { return 'unknown' ; } return $ ip ; }
Get user IP.

@return string
Get user IP .