(PHP ActiveX) X.com OAuth 2.0 Refresh Access Token

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Note: This example requires Chilkat v10.1.2 or greater.

For more information, see https://docs.x.com/resources/fundamentals/authentication/oauth-2-0/authorization-code

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$jsonToken = new COM("Chilkat.JsonObject");
$success = $jsonToken->LoadFile('qa_data/tokens/x.json');
if ($success != 1) {
    print 'Failed to load x.json' . "\n";
    exit;
}

// The access token JSON looks something like this:

// {
//   "token_type": "bearer",
//   "expires_in": 7200,
//   "access_token": "VmNDLVZiYUZwejY5Mkx3RblFTmo3ek1leTRGclMuZFVOUTVUTWpNbVZKb1N5OjE3NDAxNjk4MDVxNTE6MToxOaF0OjE",
//   "scope": "block.read follows.read offline.access tweet.write block.write like.write like.read users.read tweet.read follows.write",
//   "refresh_token": "eThOWVVFSTRqdVp3QTFndGsxM2ZGZmFyNWVrU0phM1JKbGdrbGNWRGJzb1loOjE3NDAwMjk4MDUxNTI6MTowOnJ0OjE"
// }

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.OAuth2')
$oauth2 = new COM("Chilkat.OAuth2");

$oauth2->TokenEndpoint = 'https://api.x.com/2/oauth2/token';

// Replace this with your actual X.com OAuth2 Client ID and Client Secret
$oauth2->ClientId = 'OAUTH2_CLIENT_ID';
$oauth2->ClientSecret = 'OAUTH2_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;
}

// Load the access token response into the json object 
$jsonToken->Load($oauth2->AccessTokenResponse);

// If an "expires_on" member does not exist, then add the JSON member by
// getting the current system date/time and adding the "expires_in" seconds.
// This way we'll know when the token expires.
if ($jsonToken->HasMember('expires_on') == 0) {
    // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.CkDateTime')
    $dtExpire = new COM("Chilkat.CkDateTime");
    $dtExpire->SetFromCurrentSystemTime();
    $dtExpire->AddSeconds($jsonToken->IntOf('expires_in'));
    $jsonToken->AppendString('expires_on',$dtExpire->getAsUnixTimeStr(0));
}

// Save the new JSON access token response to a file.
// The access + refresh tokens contained in this JSON will be needed for the next refresh.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbJson = new COM("Chilkat.StringBuilder");
$jsonToken->EmitCompact = 0;
$jsonToken->EmitSb($sbJson);
$sbJson->WriteFile('qa_data/tokens/x.json','utf-8',0);

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

?>