消息推送系统

<?php

require_once 'vendor/autoload.php';

use League\OAuth2\Client\Provider\GenericProvider;

$provider = new GenericProvider([

'clientId' => 'your-client-id',

'clientSecret' => 'your-client-secret',

'redirectUri' => 'https://example.com/callback',

'urlAuthorize' => 'https://api.example.com/oauth/authorize',

'urlAccessToken' => 'https://api.example.com/oauth/token',

'urlResourceOwnerDetails' => 'https://api.example.com/user'

]);

try {

// Start authorization process

$authUrl = $provider->getAuthorizationUrl();

header('Location: '.$authUrl);

} catch (Exception $e) {

echo 'Error: '.$e->getMessage();

}

?>