我有一个API脚本，它是从Magento检索产品数据API。

的数据
然后用线print_r($productsList)显示，如下所示：

的
我所要做的就是回应这些价值观中的一个。我已经尝试了以下方法：
echo $productsList['sku']和print_r(&productsList['sku'])
但是什么都不起作用。我假设这是因为这是一个变量而不是一个数组。有什么方法可以做到这一点吗？或者是从Magento API中带回的数据是“一片”，不能分割的？
完整的剧本在下面。

<?php
error_reporting(E_STRICT);
$callbackUrl = "xxx";
$temporaryCredentialsRequestUrl = "https://ts564737-container.zoeysite.com/oauth/initiate?oauth_callback=" . urlencode($callbackUrl);
$adminAuthorizationUrl = 'https://ts564737-container.zoeysite.com/admin/oauth_authorize';
$accessTokenRequestUrl = 'https://ts564737-container.zoeysite.com/oauth/token';
$apiUrl = 'https://ts564737-container.zoeysite.com/api/rest';
$consumerKey = 'xxx';
$consumerSecret = 'xxx';

session_start();
if (!isset($_GET['oauth_token']) && isset($_SESSION['state']) && $_SESSION['state'] == 1) {
    $_SESSION['state'] = 0;
}
try {
    
    $authType = ($_SESSION['state'] == 2) ? OAUTH_AUTH_TYPE_AUTHORIZATION : OAUTH_AUTH_TYPE_URI;
    
    $oauthClient = new OAuth($consumerKey, $consumerSecret, OAUTH_SIG_METHOD_HMACSHA1, $authType);
    $oauthClient->enableDebug();
    
    if (!isset($_GET['oauth_token']) && !$_SESSION['state']) {
        $requestToken = $oauthClient->getRequestToken($temporaryCredentialsRequestUrl);
        //echo '<pre>';print_r($requestToken);echo '</pre>';
        //exit;
        $_SESSION['secret'] = $requestToken['oauth_token_secret'];
        $_SESSION['state'] = 1;
        header('Location: ' . $adminAuthorizationUrl . '?oauth_token=' . $requestToken['oauth_token']);
    } else if ($_SESSION['state'] == 1) {
        $oauthClient->setToken($_GET['oauth_token'], $_SESSION['secret']);
        $accessToken = $oauthClient->getAccessToken($accessTokenRequestUrl);
        $_SESSION['state'] = 2;
        $_SESSION['token'] = $accessToken['oauth_token'];
        $_SESSION['secret'] = $accessToken['oauth_token_secret'];
        header('Location: ' . $callbackUrl);
    } else {
        $oauthClient->setToken($_SESSION['token'], $_SESSION['secret']);
        $resourceUrl = "$apiUrl/products/?order=entity_id&filter[0][attribute]=sku&filter[0][in][0]=product1";
        //echo $resourceUrl;
        //exit;
        $oauthClient->fetch($resourceUrl, array(), 'GET', array('Content-Type' => 'application/json', 'Accept' => 'application/json'));
        $productsList = json_decode($oauthClient->getLastResponse());
    }
} catch (OAuthException $e) {
    echo '<pre>';print_r($e);echo '</pre>';
}

print_r($productsList);

?>

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