S3::getDistributionInvalidationList PHP Method

    public static function getDistributionInvalidationList($distributionId)
    {
        if (!extension_loaded('openssl')) {
            self::__triggerError(sprintf("S3::getDistributionInvalidationList(): [%s] %s", "CloudFront functionality requires SSL"), __FILE__, __LINE__);
            return false;
        }
        $useSSL = self::$useSSL;
        self::$useSSL = true;
        // CloudFront requires SSL
        $rest = new S3Request('GET', '', '2010-11-01/distribution/' . $distributionId . '/invalidation', 'cloudfront.amazonaws.com');
        $rest = self::__getCloudFrontResponse($rest);
        self::$useSSL = $useSSL;
        if ($rest->error === false && $rest->code !== 200) {
            $rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
        }
        if ($rest->error !== false) {
            trigger_error(sprintf("S3::getDistributionInvalidationList('{$distributionId}'): [%s]", $rest->error['code'], $rest->error['message']), E_USER_WARNING);
            return false;
        } elseif ($rest->body instanceof SimpleXMLElement && isset($rest->body->InvalidationSummary)) {
            $list = array();
            foreach ($rest->body->InvalidationSummary as $summary) {
                $list[(string) $summary->Id] = (string) $summary->Status;
            }
            return $list;
        }
        return array();
    }