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I am using google api to get access token and refresh token. but my question is how to use this refresh token to get new access token then i can again update users detail. I have all credentials and i'm getting first access token and refresh token which i stored into database. i want to get new access token and again i have to store into database. how can i do this. i'm trying this..i don't know it is correct or not..

 if (isset($_GET['code'])) { $client->setAccessType('offline'); $client->authenticate($_GET['code']); $gClient->setAccessType('offline'); $_SESSION['token'] = $client->getAccessToken(); $redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']; header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL)); return; } if (isset($_SESSION['token'])) { $client->setAccessToken($_SESSION['token']); } if($client->isAccessTokenExpired()) { $client->setAccessType('offline'); if (isset($_GET['code'])) { $client->authenticate(); $_SESSION['access_token'] = $client->getAccessToken(); } if (isset($_REQUEST['logout'])) { unset($_SESSION['token']); $client->revokeToken(); } ?> <!doctype html> <html> <head><meta charset="utf-8"></head> <body> <header><h1>Get Token</h1></header> <?php if ($client->getAccessToken()) { $_SESSION['token'] = $client->getAccessToken(); $token = json_decode($_SESSION['token']); echo "Access Token = " . $token->access_token . '<br/>'; echo "Refresh Token = " . $token->refresh_token . '<br/>'; echo "Token type = " . $token->token_type . '<br/>'; echo "Expires in = " . $token->expires_in . '<br/>'; echo "ID Token = " . $token->id_token . '<br/>'; echo "Created = " . $token->created . '<br/>'; echo "<a class='logout' href='?logout'>Logout</a>"; } else { $authUrl = $client->createAuthUrl(); print "<a class='login' href='$authUrl'>Connect Me!</a>"; } ?> </body> </html>

will i write another file for refresh the access token or i can do on a single file.

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  • What did you try so far getting your goal? any code? error? effort? Please post you complete code. Commented Mar 30, 2015 at 11:28
  • possible duplicate of How to refresh token with Google API client? Commented Mar 30, 2015 at 11:31
  • just check now..updated,,using this i'm getting access token and refresh token using this code..but access token expired after sometimes so i have to refresh access token using refresh token.. Commented Mar 30, 2015 at 11:34
  • jigar i'm not getting any solution thats why i'm asking..if u have any solution thn suggest me. Commented Mar 30, 2015 at 11:39
  • @neha what problem you are facing?? Not getting the refresh token or you want o generate the refresh token in the same page?? Commented Mar 30, 2015 at 12:07

2 Answers 2

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After getting token first time :

$code = FIRST_TIME_TOKEN; $client = new Google_Client(); $client->setClientId(self::OAUTH2_CLIENT_ID); $client->setClientSecret(self::OAUTH2_CLIENT_SECRET); $client->setScopes(SCOPE_URL); $client->setAccessType('offline'); $redirect = filter_var(REDIRECT_URL, FILTER_SANITIZE_URL); $client->setRedirectUri($redirect); $youtube = new Google_Service_YouTube($client); // You can change it if (isset($code)) { if (strval($_SESSION['state']) !== strval($_GET['state'])) { throw new \Exception('Session expired , Please refresh the page'); } $client->authenticate($code); $_SESSION['token'] = $client->getAccessToken(); header('Location: ' . $redirect); } $completeYoutubeResponse=json_decode($_SESSION['token']); if(!isset($completeYoutubeResponse->access_token) || !isset($completeYoutubeResponse->refresh_token)) { throw new \Exception('This youtube account is used by some other user'); } else { $accessToken=$completeYoutubeResponse->access_token; // We need to save it in db $refreshToken=$completeYoutubeResponse->refresh_token; // We need to save it in db return (isset($completeYoutubeResponse) ? $completeYoutubeResponse : null);
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5 Comments

praveen i have 1 doubt..in $code object..what i have to write thier..my old code where i'm getting aceess token or user's access token only their.
Welcome , and do accept answer so that it helps other :)
but parveen it showing me error.. Notice: Undefined index: state in /opt/lampp/htdocs/google/access_token.php on line 26 Notice: Undefined index: state in /opt/lampp/htdocs/google/access_token.php on line 26 Fatal error: Uncaught exception 'Google_AuthException' with message 'Error fetching OAuth2 access token, message: 'invalid_grant'' in /opt/lampp/htdocs/google/src/auth/Google_OAuth2.php:113 Stack trace: #0 /opt/lampp/htdocs/google/src/Google_Client.php(131): Google_OAuth2->authenticate(Array, 'ya29.RwGuDqqTIu...') #1 /opt/lampp/htdocs/google/access_token.php(30): Google_Client->authentic
actually if i comment $code line and replace your (if (isset($code))), to this (if (isset($_GET['code']) then i'm getting access token..so that token is generated from refresh token or this is a first time access token..i didnt understand..
i don't have enough reputation,so thats why i can't vote sorry..:-)
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Use:

$token = json_decode($_SESSION['token']); $client->refreshToken($token->refresh_token); $_SESSION['token'] = $client->getAccessToken();
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4 Comments

thanks Hans for ur reply..actually problem is that,i'm storing refresh token and access token in database so that i can update the users details anytime..thats why i have need to refresh the token ..can you give me detail about how to generate access token in seperate php file.
what do you want to generate?
hans ..i want to get new access token n also refresh token.
edited the code so it shows how to access the newly obtained access token and store it in the session.; you can't generate a new refresh token, you have to use the one that was returned to you in the first call, until the end user revokes access for your app and re-allows it

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