Apple_Exporter\Components\Component::remote_file_exists PHP Method

    protected static function remote_file_exists($node)
    {
        $html = $node->ownerDocument->saveXML($node);
        preg_match('/src="([^"]*?)"/im', $html, $matches);
        $path = $matches[1];
        // Is it a URL? Check the headers in case of 404
        if (false !== filter_var($path, FILTER_VALIDATE_URL)) {
            if (defined('WPCOM_IS_VIP_ENV') && WPCOM_IS_VIP_ENV) {
                $result = vip_safe_wp_remote_get($path);
            } else {
                $result = wp_safe_remote_get($path);
            }
            if (is_wp_error($result) || empty($result['response']['code']) || 404 == $result['response']['code']) {
                return false;
            } else {
                return true;
            }
        }
        // This could be a local file path.
        // Check that, except on WordPress VIP where this is not possible.
        if (!defined('WPCOM_IS_VIP_ENV') || !WPCOM_IS_VIP_ENV) {
            return file_exists($path);
        }
        // Nothing was found or no further validation is possible.
        return false;
    }