How to get userinfo in google api Php

Question

I am working with google api(Rest Api) in php, I just want whenever any user send "access_token/token" then i want to validate and get userinfo,How can i do this ?

I tried with following code but not working for me,showing me always url in my postman,Where i am wrong ?

<?php 
$google_client->authenticate($_GET['code']);

    $client = new Google_Client();
    $google_client = new Google_Client();
    $google_client->setClientId('xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com'); //Define your ClientID
    $google_client->setClientSecret('xxxxxxxxxxxxxxxxxxxxx'); //Define your Client Secret Key
    $google_client->setRedirectUri('xxxxxxxxxxxx'); //Define your Redirect Uri
    $google_client->addScope('email');
    $google_client->addScope('profile');
    $objOAuthService = new Google_Service_Oauth2($google_client);
        $getAccesToken = $google_client->getAccessToken();
        $getRefreshToken = $google_client->getRefreshToken();
        $google_client->setAccessToken($token['access_token']);
        $objOAuthService = new Google_Service_Oauth2($google_client);
        if($google_client->getAccessToken()) {
        $userData = $objOAuthService->userinfo->get();
    if(!empty($userData)) 
        {
            
    $outputjson['user_data'] = $userData;
    $outputjson['access_token'] = $google_client->getAccessToken();
    }else{
    $outputjson['login_url'] = $google_client->createAuthUrl();
    }

}