Dropbox无效访问令牌

我在这里遵循Dropbox API。https://www.dropbox.com/developers/core/start/php

向下滚动页面会显示"完整代码"我复制并粘贴到index。php

在访问index.php

1. Go to: https://www.dropbox.com/1/oauth/authorize?locale=en&oauth_token=9PURkb1SJoLJ4Z41&oauth_callback=http%3A%2F%2Flocalhost%2Fmax%2F
2. Click "Allow" (you might have to log in first)
3. Hit ENTER to continue.

我去那里，点击"允许"按钮，然后我被引导回来，什么也没发生。

我的错误控制台显示

PHP Notice:  Use of undefined constant STDIN - assumed 'STDIN' in /Applications/MAMP/htdocs/max/index.php on line 16
[05-May-2013 20:33:53 UTC] PHP Warning:  fgets() expects parameter 1 to be resource, string given in /Applications/MAMP/htdocs/max/index.php on line 16
[05-May-2013 20:33:54 UTC] PHP Fatal error:  Uncaught exception 'Dropbox'Exception_InvalidAccessToken' with message '
{"error": "Invalid or expired oauth_token"}' in /Applications/MAMP/htdocs/max/dropbox-sdk/Dropbox/RequestUtil.php:222
Stack trace:
#0 /Applications/MAMP/htdocs/max/dropbox-sdk/Dropbox/WebAuth.php(155): Dropbox'RequestUtil::unexpectedStatus(Object(Dropbox'HttpResponse))
#1 /Applications/MAMP/htdocs/max/index.php(19): Dropbox'WebAuth->finish(Object(Dropbox'RequestToken))
#2 {main}
  thrown in /Applications/MAMP/htdocs/max/dropbox-sdk/Dropbox/RequestUtil.php on line 222

如何修复这些错误?我只是照抄他们给我的

index . php

require_once "dropbox-sdk/Dropbox/autoload.php";
use 'Dropbox as dbx;
$appInfo = dbx'AppInfo::loadFromJsonFile("config.json");
$dbxConfig = new dbx'Config($appInfo, "PHP-Example/1.0");
$webAuth = new dbx'WebAuth($dbxConfig);
list($requestToken, $authorizeUrl) = $webAuth->start('http://localhost/max/');
echo "1. Go to: " . $authorizeUrl . "<br>";
echo "2. Click '"Allow'" (you might have to log in first)<br>";
echo "3. Hit ENTER to continue.'n";
fgets(STDIN);

list($accessToken, $dropboxUserId) = $webAuth->finish($requestToken);
print "Access Token: " . $accessToken->serialize() . "'n";
$dbxClient = new dbx'Client($dbxConfig, $accessToken);
$accountInfo = $dbxClient->getAccountInfo();
print_r($accountInfo);
$f = fopen("working-draft.txt", "rb");
$result = $dbxClient->uploadFile("/working-draft.txt", dbx'WriteMode::add(), $f);
fclose($f);
print_r($result);
$folderMetadata = $dbxClient->getMetadataWithChildren($path);
print_r($folderMetadata);
$f = fopen("working-draft.txt", "w+b");
$fileMetadata = $dbxClient->getFile("/working-draft.txt", $f);
fclose($f);
print_r($fileMetadata);