问YouTube分析API PHP: usageLimits accessNotConfigured

EN

session_start();
include('GoogleAnalyticsAPI.class.php');

$ga = new GoogleAnalyticsAPI(); 
$ga->auth->setClientId('replaces'); // From the APIs console
$ga->auth->setClientSecret('replaces'); // From the APIs console
$ga->auth->setRedirectUri('replaced'); // Url to your app, must match one in the APIs console

// Get the Auth-Url
$url = $ga->auth->buildAuthUrl();

// Set the accessToken and Account-Id
$ga->setAccessToken($_SESSION['accessToken']);
$ga->setAccountId('ga:xxxxxxx');

// Load profiles
$profiles = $ga->getProfiles();
print_r($profiles);
$accounts = array();
foreach ($profiles['items'] as $item) {
    $id = "ga:{$item['id']}";
    $name = $item['name'];
    $accounts[$id] = $name;
}
// Print out the Accounts with Id => Name. Save the Id (array-key) of the account you want to query data. 
// See next chapter how to set the account-id.
print_r($accounts); 

Array
(
    [http_code] => 403
    [error] => Array
        (
            [errors] => Array
                (
                    [0] => Array
                        (
                            [domain] => usageLimits
                            [reason] => accessNotConfigured
                            [message] => Access Not Configured. The API is not enabled for your project, or there is a per-IP or per-Referer restriction configured on your API key and the request does not match these restrictions. Please use the Google Developers Console to update your configuration.
                            [extendedHelp] => https://console.developers.google.com
                        )

                )

            [code] => 403
            [message] => Access Not Configured. The API is not enabled for your project, or there is a per-IP or per-Referer restriction configured on your API key and the request does not match these restrictions. Please use the Google Developers Console to update your configuration.
        )

)
<br />
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Array
(
)