A8C_Files::attachment_file_exists PHP Method

    function attachment_file_exists($file_url)
    {
        $url_parts = parse_url($file_url);
        $post_url = $this->get_files_service_hostname() . $url_parts['path'];
        $headers = array('X-Client-Site-ID: ' . constant('FILES_CLIENT_SITE_ID'), 'X-Access-Token: ' . constant('FILES_ACCESS_TOKEN'), 'X-Action: file_exists');
        $ch = curl_init($post_url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);
        curl_setopt($ch, CURLOPT_VERBOSE, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return 200 == $http_code;
    }