PHP 擷取用戶端IP

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function get_ip(){    static $realIP;    if (isset($_SERVER)){        if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])){            $realIP = explode(‘,‘, $_SERVER["HTTP_X_FORWARDED_FOR"]);            $realIP = $realIP[0];        } else if (isset($_SERVER["HTTP_CLIENT_IP"])) {            $realIP = $_SERVER["HTTP_CLIENT_IP"];        } else {            $realIP = $_SERVER["REMOTE_ADDR"];        }    } else {        if (getenv("HTTP_X_FORWARDED_FOR")){            $realIP = getenv("HTTP_X_FORWARDED_FOR");        } else if (getenv("HTTP_CLIENT_IP")) {            $realIP = getenv("HTTP_CLIENT_IP");        } else {            $realIP = getenv("REMOTE_ADDR");        }    }    $_SERVER[‘REMOTE_ADDR‘] = $realIP;    return $realIP;}

 

PHP 擷取用戶端IP