PHP Extension

Yahoo Mail Refresh OAuth2 Access Token

See more Yahoo Mail Examples

Demonstrates how to refresh an OAuth2 Yahoo Mail access token. PHP Extension

<?php

include("chilkat.php");

$success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// It is assumed we previously obtained an OAuth2 access token.
// This example loads the JSON access token file 
// saved by this example: Get Yahoo Mail OAuth2 Access Token

$jsonToken = new CkJsonObject();
$success = $jsonToken->LoadFile('qa_data/tokens/yahooMail.json');
if ($success != true) {
    print 'Failed to load googleSheets.json' . "\n";
    exit;
}

// The access token JSON looks like this:

// {
//   "access_token": "kCVQdnOdul...LHucA--",
//   "refresh_token": "AIenVWETSo0jklFBVkPS8vVm8E.Dj9ToRG.xDbDYmZ55WIs5t6CZhDkD",
//   "expires_in": 3600,
//   "token_type": "bearer",
//   "xoauth_yahoo_guid": "HGDQCVF6JB4YDOWHITPJFBHCWA"
// }

$oauth2 = new CkOAuth2();

// See Step 5 at https://developer.yahoo.com/oauth2/guide/flows_authcode/
$oauth2->put_TokenEndpoint('https://api.login.yahoo.com/oauth2/get_token');

// Replace these with actual values.
$oauth2->put_ClientId('CLIENT_ID');
$oauth2->put_ClientSecret('CLIENT_SECRET');

// Get the "refresh_token"
$oauth2->put_RefreshToken($jsonToken->stringOf('refresh_token'));

// Send the HTTP POST to refresh the access token..
$success = $oauth2->RefreshAccessToken();
if ($success != true) {
    print $oauth2->lastErrorText() . "\n";
    exit;
}

// The response contains a new access token, but we must keep
// our existing refresh token for when we need to refresh again in the future.
$jsonToken->UpdateString('access_token',$oauth2->accessToken());

// Save the new JSON access token response to a file.
$sbJson = new CkStringBuilder();
$jsonToken->put_EmitCompact(false);
$jsonToken->EmitSb($sbJson);
$sbJson->WriteFile('qa_data/tokens/yahooMail.json','utf-8',false);

print 'OAuth2 authorization granted!' . "\n";
print 'New Access Token = ' . $oauth2->accessToken() . "\n";

?>