PHP Youtube API上传视频代码示例上传两次

Question

我正在使用 php 代码示例上传 youtube 提供的视频，可以在这里找到:https://developers.google.com/youtube/v3/code_samples/php#upload_a_video

但是，当 session 开始时，它需要用户对其进行授权，因此它会将您带到授权页面，然后将您重定向回来。这样做时，它会上传两次，我假设它正在尝试上传未经授权时无法上传的视频。它仅在授权时双重上传，而不是在页面重新加载且 session 仍然有效时。

如何停止这种初始重复上传？

Answer 1

当用户单击带有文本输入中定义的路径的提交按钮时，您可以在用户登录后立即使用以下代码上传文件:

<?php
/**
 * Library Requirements
 *
 * 1. Install composer (https://getcomposer.org)
 * 2. On the command line, change to this directory (api-samples/php)
 * 3. Require the google/apiclient library
 *    $ composer require google/apiclient:~2.0
 */
if (!file_exists(__DIR__ . '/vendor/autoload.php')) {
  throw new \Exception('please run "composer require google/apiclient:~2.0" in "' . __DIR__ .'"');
}
require_once __DIR__ . '/vendor/autoload.php';
session_start();

$response = "";

/*
 * You can acquire an OAuth 2.0 client ID and client secret from the
 * {{ Google Cloud Console }} <{{ https://cloud.google.com/console }}>
 * For more information about using OAuth 2.0 to access Google APIs, please see:
 * <https://developers.google.com/youtube/v3/guides/authentication>
 * Please ensure that you have enabled the YouTube Data API for your project.
 */
$OAUTH2_CLIENT_ID = 'YOUR_CLIENTID';
$OAUTH2_CLIENT_SECRET = 'YOUR_CLIENT_SECRET';

$client = new Google_Client();
$client->setClientId($OAUTH2_CLIENT_ID);
$client->setClientSecret($OAUTH2_CLIENT_SECRET);
$client->setScopes('https://www.googleapis.com/auth/youtube');

$redirect = filter_var('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'],
    FILTER_SANITIZE_URL);

$client->setRedirectUri($redirect);
// Define an object that will be used to make all API requests.
$youtube = new Google_Service_YouTube($client);
// Check if an auth token exists for the required scopes
$tokenSessionKey = 'token-' . $client->prepareScopes();
if (isset($_GET['code'])) {
  if (strval($_SESSION['state']) !== strval($_GET['state'])) {
    die('The session state did not match.');
  }
  $client->authenticate($_GET['code']);
  $_SESSION[$tokenSessionKey] = $client->getAccessToken();
  header('Location: ' . $redirect);
}
if (isset($_SESSION[$tokenSessionKey])) {
  $client->setAccessToken($_SESSION[$tokenSessionKey]);
}
// Check to ensure that the access token was successfully acquired.

if ($client->getAccessToken()) {
  try {

    $videoPath = "";

    if (isset($_GET['videoPath'])){
    $videoPath = $_GET['videoPath'];
    }
    else if(isset($_SESSION['videoPath'])){
      $videoPath = $_SESSION['videoPath'];
    }

    if(isset($videoPath) && !isset($_GET['state']) && file_exists($videoPath)) {

      // Create a snippet with title, description, tags and category ID
      // Create an asset resource and set its snippet metadata and type.
      // This example sets the video's title, description, keyword tags, and
      // video category.
      $snippet = new Google_Service_YouTube_VideoSnippet();
      $snippet->setTitle("Test title");
      $snippet->setDescription("Test description");
      $snippet->setTags(array("tag1", "tag2"));

      // Numeric video category. See
      // https://developers.google.com/youtube/v3/docs/videoCategories/list
      $snippet->setCategoryId("22");

      // Set the video's status to "public". Valid statuses are "public",
      // "private" and "unlisted".
      $status = new Google_Service_YouTube_VideoStatus();
      $status->privacyStatus = "private";

      // Associate the snippet and status objects with a new video resource.
      $video = new Google_Service_YouTube_Video();
      $video->setSnippet($snippet);
      $video->setStatus($status);

      // Specify the size of each chunk of data, in bytes. Set a higher value for
      // reliable connection as fewer chunks lead to faster uploads. Set a lower
      // value for better recovery on less reliable connections.
      $chunkSizeBytes = 1 * 1024 * 1024;

      // Setting the defer flag to true tells the client to return a request which can be called
      // with ->execute(); instead of making the API call immediately.
      $client->setDefer(true);

      // Create a request for the API's videos.insert method to create and upload the video.
      $insertRequest = $youtube->videos->insert("status,snippet", $video);

      // Create a MediaFileUpload object for resumable uploads.
      $media = new Google_Http_MediaFileUpload(
          $client,
          $insertRequest,
          'video/*',
          null,
          true,
          $chunkSizeBytes
      );
      $media->setFileSize(filesize($videoPath));

      // Read the media file and upload it chunk by chunk.
      $status = false;
      $handle = fopen($videoPath, "rb");
      while (!$status && !feof($handle)) {
        $chunk = fread($handle, $chunkSizeBytes);
        $status = $media->nextChunk($chunk);
      }

      fclose($handle);

      // If you want to make other calls after the file upload, set setDefer back to false
      $client->setDefer(false);

      $response .= "<h3>Video Uploaded</h3><ul>";
      $response .= sprintf('<li>%s (%s)</li>',
          $status['snippet']['title'],
          $status['id']);

      $response .= '</ul>';

      $_SESSION['path'] = "";
  }
  else{
    $response = "no path was specified or file doesn't exist";
    file_put_contents('php://stderr', print_r("no path was specified or file doesn't exist", TRUE));
  }

  } catch (Google_Service_Exception $e) {
    $response = htmlspecialchars($e->getMessage());
  } catch (Google_Exception $e) {
    $response = htmlspecialchars($e->getMessage());
  }
  $_SESSION[$tokenSessionKey] = $client->getAccessToken();
} else {

  if(isset($_GET['videoPath'])){

    $_SESSION["videoPath"] = $_GET['videoPath'];

    // If the user hasn't authorized the app, initiate the OAuth flow
    $state = mt_rand();
    $client->setState($state);
    $_SESSION['state'] = $state;
    $authUrl = $client->createAuthUrl();
    header('Location: ' . $authUrl);
  }
}
?>

<!doctype html>
<html>
<head>
 <title>Upload Video</title>
</head>
<body>
   <div>
        <form id="form" action="resumable_upload.php"">

          <label>Enter the path to the video to upload
           :
                <input id="video-path" name="videoPath" value='/path/to/video' type="text" />
          </label>
          <input name="action" type="submit" value="Upload video" />
        </form>
        <div id="playlist-container">
          <?php echo $response ?>
        </div>
    </div>
</body>
</html>

但是如果页面刷新或者用户再次误点击按钮，它会重新上传视频。检查this post处理重复视频问题