PHP Extension Requires Chilkat v10.1.2+

X.com OAuth 2.0 Authorization Code with PKCE

See more X Examples

Demonstrates how to get an X.com OAuth2 access token from a desktop application or script. PHP Extension

<?php

include("chilkat.php");

$success = false;

//  For more information about the OAuth2, see OAuth 2.0 Authorization Flow

$oauth2 = new CkOAuth2();

//  The port should match the Authorized Redirect URL in your X.com app, 
//  which would look like "http://127.0.0.1:3017/"
//  See the screenshot below of the App Settings in the X Developer Portal
$oauth2->put_LocalHost('127.0.0.1');
$oauth2->put_ListenPort(3017);

$oauth2->put_AuthorizationEndpoint('https://x.com/i/oauth2/authorize');
$oauth2->put_TokenEndpoint('https://api.x.com/2/oauth2/token');

//  Replace this with your actual X.com OAuth2 Client ID and Client Secret
$oauth2->put_ClientId('OAUTH2_CLIENT_ID');
$oauth2->put_ClientSecret('OAUTH2_CLIENT_SECRET');

//  This is for Require Proof Key for Code Exchange (PKCE)
//  See OAuth2 PKCE Explained
$oauth2->put_CodeChallenge(true);
$oauth2->put_CodeChallengeMethod('S256');

//  Space separated scopes...
$oauth2->put_Scope('tweet.read tweet.write users.read follows.read follows.write offline.access like.read like.write block.read block.write');

//  Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
$url = $oauth2->startAuth();
if ($oauth2->get_LastMethodSuccess() != true) {
    print $oauth2->lastErrorText() . "\n";
    exit;
}

print 'url = ' . $url . "\n";

//  Launch the default browser on the system and navigate to the url.
//  The LaunchBrowser method was added in Chilkat v10.1.2.
$success = $oauth2->LaunchBrowser($url);
if ($success == false) {
    print $oauth2->lastErrorText() . "\n";
    exit;
}

//  Wait for the user to approve or deny authorization in the browser.
$numMsWaited = 0;
while (($numMsWaited < 10000) and ($oauth2->get_AuthFlowState() < 3)) {
    $oauth2->SleepMs(100);
    $numMsWaited = $numMsWaited + 100;
}

//  If the browser does not respond within the specified time, AuthFlowState will be:
//  
//  1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
//  2: Waiting for Final Response - The thread is awaiting the final access token response.
//  In either case, cancel the background task initiated by StartAuth.

if ($oauth2->get_AuthFlowState() < 3) {
    $oauth2->Cancel();
    print 'No response from the browser!' . "\n";
    exit;
}

//  Check AuthFlowState to determine if authorization was granted, denied, or failed:
//  
//  3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
//  4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
//  5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

if ($oauth2->get_AuthFlowState() == 5) {
    print 'OAuth2 failed to complete.' . "\n";
    print $oauth2->failureInfo() . "\n";
    exit;
}

if ($oauth2->get_AuthFlowState() == 4) {
    print 'OAuth2 authorization was denied.' . "\n";
    print $oauth2->accessTokenResponse() . "\n";
    exit;
}

if ($oauth2->get_AuthFlowState() != 3) {
    print 'Unexpected AuthFlowState:' . $oauth2->get_AuthFlowState() . "\n";
    exit;
}

print 'OAuth2 authorization granted!' . "\n";

$json = new CkJsonObject();
$json->Load($oauth2->accessTokenResponse());
$json->put_EmitCompact(false);

//  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 ($json->HasMember('expires_on') == false) {
    $dtExpire = new CkDateTime();
    $dtExpire->SetFromCurrentSystemTime();
    $dtExpire->AddSeconds($json->IntOf('expires_in'));
    $json->AppendString('expires_on',$dtExpire->getAsUnixTimeStr(false));
}

print 'Access Token Response = ' . $json->emit() . "\n";

//  A sample access token response:

//  {
//    "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"
//  }

print 'Access Token = ' . $oauth2->accessToken() . "\n";

print 'Refresh Token = ' . $oauth2->refreshToken() . "\n";

//  Save the JSON access token response to a file for subsequent use..
$json->WriteFile('qa_data/tokens/x.json');

//  

?>