71 lines
2.3 KiB
PHP
71 lines
2.3 KiB
PHP
<?php
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$fb = new Facebook\Facebook([
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'app_id' => $appID, // Replace {app-id} with your app id
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'app_secret' => $appSecret,
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'default_graph_version' => 'v2.2',
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]);
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$helper = $fb->getRedirectLoginHelper();
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try {
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$accessToken = $helper->getAccessToken();
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} catch(Facebook\Exceptions\FacebookResponseException $e) {
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// When Graph returns an error
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echo 'Graph returned an error: ' . $e->getMessage();
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exit;
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} catch(Facebook\Exceptions\FacebookSDKException $e) {
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// When validation fails or other local issues
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echo 'Facebook SDK returned an error: ' . $e->getMessage();
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exit;
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}
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if (! isset($accessToken)) {
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if ($helper->getError()) {
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header('HTTP/1.0 401 Unauthorized');
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echo "Error: " . $helper->getError() . "\n";
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echo "Error Code: " . $helper->getErrorCode() . "\n";
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echo "Error Reason: " . $helper->getErrorReason() . "\n";
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echo "Error Description: " . $helper->getErrorDescription() . "\n";
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} else {
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header('HTTP/1.0 400 Bad Request');
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echo 'Bad request';
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}
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exit;
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}
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// Logged in
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echo '<h3>Access Token</h3>';
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var_dump($accessToken->getValue());
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// The OAuth 2.0 client handler helps us manage access tokens
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$oAuth2Client = $fb->getOAuth2Client();
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// Get the access token metadata from /debug_token
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$tokenMetadata = $oAuth2Client->debugToken($accessToken);
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echo '<h3>Metadata</h3>';
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var_dump($tokenMetadata);
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// Validation (these will throw FacebookSDKException's when they fail)
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$tokenMetadata->validateAppId($appID); // Replace {app-id} with your app id
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// If you know the user ID this access token belongs to, you can validate it here
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//$tokenMetadata->validateUserId('123');
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$tokenMetadata->validateExpiration();
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if (! $accessToken->isLongLived()) {
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// Exchanges a short-lived access token for a long-lived one
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try {
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$accessToken = $oAuth2Client->getLongLivedAccessToken($accessToken);
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} catch (Facebook\Exceptions\FacebookSDKException $e) {
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echo "<p>Error getting long-lived access token: " . $helper->getMessage() . "</p>\n\n";
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exit;
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}
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echo '<h3>Long-lived</h3>';
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var_dump($accessToken->getValue());
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}
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$_SESSION['fb_access_token'] = (string) $accessToken;
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// User is logged in with a long-lived access token.
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// You can redirect them to a members-only page.
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//header('Location: https://example.com/members.php');
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