PHP ActiveX

Google Translate API Refresh Access Token

See more Google Translate Examples

Demonstrates how to refresh a Google Access Token for the Google Translate API. PHP ActiveX

<?php

$success = 0;

// 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 Google Translate API OAuth2 Access Token

$jsonToken = new COM("Chilkat.JsonObject");
$success = $jsonToken->LoadFile('qa_data/tokens/_googleTranslate.json');
if ($success != 1) {
    print 'Failed to load _googleTranslate.json' . "\n";
    exit;
}

// The access token JSON looks like this:

// {
//   "access_token": "ya29.a0AfH6S ... LAZYFUkf0",
//   "expires_in": 3599,
//   "refresh_token": "1//0fL_Ov ... ee0",
//   "scope": "https://www.googleapis.com/auth/cloud-translation",
//   "token_type": "Bearer"
// }

$oauth2 = new COM("Chilkat.OAuth2");

$oauth2->TokenEndpoint = 'https://www.googleapis.com/oauth2/v4/token';

// Replace these with actual values.
$oauth2->ClientId = 'GOOGLE-CLIENT-ID';
$oauth2->ClientSecret = 'GOOGLE-CLIENT-SECRET';

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

// Send the HTTP POST to refresh the access token..
$success = $oauth2->RefreshAccessToken();
if ($success != 1) {
    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 COM("Chilkat.StringBuilder");
$jsonToken->EmitCompact = 0;
$jsonToken->EmitSb($sbJson);
$sbJson->WriteFile('qa_data/tokens/_googleTranslate.json','utf-8',0);

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

?>