php获取IP结果显示不正常

/**
 * 获取客户端IP地址
 * @return string
 */
function get_client_ip() { 
    if(getenv('HTTP_CLIENT_IP')){ 
        $client_ip = getenv('HTTP_CLIENT_IP'); 
    } elseif(getenv('HTTP_X_FORWARDED_FOR')) { 
        $client_ip = getenv('HTTP_X_FORWARDED_FOR'); 
    } elseif(getenv('REMOTE_ADDR')) {
        $client_ip = getenv('REMOTE_ADDR'); 
    } else {
        $client_ip = $_SERVER['REMOTE_ADDR'];
    } 
    return $client_ip; 
}   

/**

获取服务器端IP地址  * @return string  */ function get_server_ip() {     if (isset($_SERVER)) {         if($_SERVER['SERVER_ADDR']) {             $server_ip = $_SERVER['SERVER_ADDR'];         } else {             $server_ip = $_SERVER['LOCAL_ADDR'];         }     } else {         $server_ip = getenv('SERVER_ADDR');     }     return $server_ip; }