how to use google drive with api server

Question

i am trying to get files to google drive

i figure out to use example in to get list of file with with "ID clients OAuth 2.0"

once i take the "tokenID" it only work once and i guess that's how it's suppose to work,

i want use the API drive to get files only on my account

so i am going use in Backend server

however there's other type of API authorization for server in console.developers.google and i guess that will be helpful for my idea but don't know how to use it

here's other example i talk about using token

new update on the code i set access offline Note: used cookie just for example and testing

the new problem work for the first time then when i refresh again it just show code without any result or error

<?php

function retrieveAllFiles($service) {
  $result = array();
  $pageToken = NULL;

  do {
    try {
      $parameters = array();
      if ($pageToken) {
        $parameters['pageToken'] = $pageToken;
      }
      $files = $service->files->listFiles($parameters);

      $result = array_merge($result, $files->getItems());
      $pageToken = $files->getNextPageToken();
    } catch (Exception $e) {
      print "An error occurred: " . $e->getMessage();
      $pageToken = NULL;
    }
  } while ($pageToken);
  return $result;
}
include_once "templates/base.php";
session_start();
$client_id = '';
$client_secret = '';
$redirect_uri = '{link}';
require_once realpath(dirname(__FILE__) . '/../src/Google/autoload.php');
$client = new Google_Client();
//4/N8jf5YPn4-BwY2J5v30gL5aM-78z2IL7QZMN_TV0odk#
$client->setClientId($client_id);
$client->setClientSecret($client_secret);
$client->setRedirectUri($redirect_uri);
$client->setAccessType('offline');
$client->addScope("https://www.googleapis.com/auth/drive");
$client->setDeveloperKey("{Api server code here}");
if(isset($_COOKIE['code'])||isset($_GET['code']))
{
  if(isset($_GET['code'])) {
    setcookie('code',$_GET['code']);
    echo"Saved code";
  }
  echo $_COOKIE['code']."<br/>";
  $refreshToken=$_COOKIE['code'];
  $client->authenticate($refreshToken);
  if($client->isAccessTokenExpired()) {
    $client->refreshToken($refreshToken);
    setcookie('code',$client->getAccessToken());
    echo "New token: ".$_COOKIE['code']."<br/>";
  }
  $service = new Google_Service_Drive($client);

  var_dump(retrieveAllFiles($service));
} else
{

  $authUrl = $client->createAuthUrl();
  echo "<a href='$authUrl'>get code</a>";
}

Answer 1

i figure out my problem -i didn't notice that my php configuration didn't show error -i was confuse between code you get in redirect link and "access token" i thought was the same

here's code

<?php

function retrieveAllFiles($service) {
  $result = array();
  $pageToken = NULL;

  do {
    try {
      $parameters = array();
      if ($pageToken) {
        $parameters['pageToken'] = $pageToken;
      }
      $files = $service->files->listFiles($parameters);

      $result = array_merge($result, $files->getItems());
      $pageToken = $files->getNextPageToken();
    } catch (Exception $e) {
      print "An error occurred: " . $e->getMessage();
      $pageToken = NULL;
    }
  } while ($pageToken);
  return $result;
}
include_once "templates/base.php";
ini_set('display_errors',1);
ini_set('display_startup_errors',1);
error_reporting(-1);
session_start();
$client_id = '';
$client_secret = '';
$redirect_uri = '';
require_once realpath(dirname(__FILE__) . '/../src/Google/autoload.php');
$client = new Google_Client();
$client->setClientId($client_id);
$client->setClientSecret($client_secret);
$client->setRedirectUri($redirect_uri);
$client->setAccessType('offline');
$client->addScope("https://www.googleapis.com/auth/drive");
if(isset($_GET['code']))
{
  $code=$_GET['code'];
  $client->authenticate($code);
  $_SESSION['access_token'] = $client->getAccessToken();
}
if(isset($_SESSION['access_token']))
{
  echo " token";
  var_dump($_SESSION['access_token']);
  $client->setAccessToken($_SESSION['access_token']);
  if($client->isAccessTokenExpired()) {
    $client->refreshToken(json_decode($_SESSION['access_token'])->refresh_token);
    $_SESSION['access_token']=$client->getAccessToken();
    echo "new token";
    var_dump($_SESSION['access_token']);
  }
  $service = new Google_Service_Drive($client);

  var_dump(retrieveAllFiles($service));
} else
{

  $authUrl = $client->createAuthUrl();
  echo "<a href='$authUrl'>get code</a>";
}