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| 1 | +<?php |
| 2 | + |
| 3 | +// Call set_include_path() as needed to point to your client library. |
| 4 | +require_once 'Google/Client.php'; |
| 5 | +require_once 'Google/Service/YouTube.php'; |
| 6 | +session_start(); |
| 7 | + |
| 8 | +/* |
| 9 | + * You can acquire an OAuth 2.0 client ID and client secret from the |
| 10 | + * {{ Google Cloud Console }} <{{ https://cloud.google.com/console }}> |
| 11 | + * For more information about using OAuth 2.0 to access Google APIs, please see: |
| 12 | + * <https://developers.google.com/youtube/v3/guides/authentication> |
| 13 | + * Please ensure that you have enabled the YouTube Data API for your project. |
| 14 | + */ |
| 15 | +$OAUTH2_CLIENT_ID = 'REPLACE_ME'; |
| 16 | +$OAUTH2_CLIENT_SECRET = 'REPLACE_ME'; |
| 17 | + |
| 18 | +$client = new Google_Client(); |
| 19 | +$client->setClientId($OAUTH2_CLIENT_ID); |
| 20 | +$client->setClientSecret($OAUTH2_CLIENT_SECRET); |
| 21 | +$client->setScopes('https://www.googleapis.com/auth/youtube'); |
| 22 | +$redirect = filter_var('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'], |
| 23 | + FILTER_SANITIZE_URL); |
| 24 | +$client->setRedirectUri($redirect); |
| 25 | + |
| 26 | +// Define an object that will be used to make all API requests. |
| 27 | +$youtube = new Google_Service_YouTube($client); |
| 28 | + |
| 29 | +if (isset($_GET['code'])) { |
| 30 | + if (strval($_SESSION['state']) !== strval($_GET['state'])) { |
| 31 | + die('The session state did not match.'); |
| 32 | + } |
| 33 | + |
| 34 | + $client->authenticate($_GET['code']); |
| 35 | + $_SESSION['token'] = $client->getAccessToken(); |
| 36 | + header('Location: ' . $redirect); |
| 37 | +} |
| 38 | + |
| 39 | +if (isset($_SESSION['token'])) { |
| 40 | + $client->setAccessToken($_SESSION['token']); |
| 41 | +} |
| 42 | + |
| 43 | +// Check to ensure that the access token was successfully acquired. |
| 44 | +if ($client->getAccessToken()) { |
| 45 | + try { |
| 46 | + // This code subscribes the authenticated user to the specified channel. |
| 47 | + |
| 48 | + // Identify the resource being subscribed to by specifying its channel ID |
| 49 | + // and kind. |
| 50 | + $resourceId = new Google_Service_YouTube_ResourceId(); |
| 51 | + $resourceId->setChannelId('UCtVd0c0tGXuTSbU5d8cSBUg'); |
| 52 | + $resourceId->setKind('youtube#channel'); |
| 53 | + |
| 54 | + // Create a snippet object and set its resource ID. |
| 55 | + $subscriptionSnippet = new Google_Service_YouTube_SubscriptionSnippet(); |
| 56 | + $subscriptionSnippet->setResourceId($resourceId); |
| 57 | + |
| 58 | + // Create a subscription request that contains the snippet object. |
| 59 | + $subscription = new Google_Service_YouTube_Subscription(); |
| 60 | + $subscription->setSnippet($subscriptionSnippet); |
| 61 | + |
| 62 | + // Execute the request and return an object containing information |
| 63 | + // about the new subscription. |
| 64 | + $subscriptionResponse = $youtube->subscriptions->insert('id,snippet', |
| 65 | + $subscription, array()); |
| 66 | + |
| 67 | + $htmlBody .= "<h3>Subscription</h3><ul>"; |
| 68 | + $htmlBody .= sprintf('<li>%s (%s)</li>', |
| 69 | + $subscriptionResponse['snippet']['title'], |
| 70 | + $subscriptionResponse['id']); |
| 71 | + $htmlBody .= '</ul>'; |
| 72 | + |
| 73 | + } catch (Google_ServiceException $e) { |
| 74 | + $htmlBody .= sprintf('<p>A service error occurred: <code>%s</code></p>', |
| 75 | + htmlspecialchars($e->getMessage())); |
| 76 | + } catch (Google_Exception $e) { |
| 77 | + $htmlBody .= sprintf('<p>An client error occurred: <code>%s</code></p>', |
| 78 | + htmlspecialchars($e->getMessage())); |
| 79 | + } |
| 80 | + |
| 81 | + $_SESSION['token'] = $client->getAccessToken(); |
| 82 | +} else { |
| 83 | + // If the user has not authorized the application, start the OAuth 2.0 flow. |
| 84 | + $state = mt_rand(); |
| 85 | + $client->setState($state); |
| 86 | + $_SESSION['state'] = $state; |
| 87 | + |
| 88 | + $authUrl = $client->createAuthUrl(); |
| 89 | + $htmlBody = <<<END |
| 90 | + <h3>Authorization Required</h3> |
| 91 | + <p>You need to <a href="$authUrl">authorize access</a> before proceeding.<p> |
| 92 | +END; |
| 93 | +} |
| 94 | +?> |
| 95 | + |
| 96 | +<!doctype html> |
| 97 | +<html> |
| 98 | +<head> |
| 99 | +<title>Returned Subscription</title> |
| 100 | +</head> |
| 101 | +<body> |
| 102 | + <?=$htmlBody?> |
| 103 | +</body> |
| 104 | +</html> |
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