PHP的Youtube API上传视频的代码示例上传两次

Question

我使用的PHP代码示例上传YouTube提供的视频，它可以在这里找到：https://developers.google.com/youtube/v3/code_samples/php#upload_a_video

然而，在会话开始时，它要求用户授权它，所以它会将您带到授权页面，然后重新导向您。在这样做的时候，它会上传两次，我假设它正在尝试上传未授权时无法播放的视频。它在授权时只上传两次，而不是在页面重新加载且会话仍然有效时。

如何阻止此初始重复上传？

Answer 1

您可以使用下面的代码上传的文件用户签到刚过，当用户点击一个在文本输入定义的路径提交按钮：

<?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，如果页面获取如果刷新或用户再次错误地点击该按钮，它将重新上传视频。检查this post以处理重复的视频问题