Qiniu\Http\Client::parseHeaders PHP Method

    private static function parseHeaders($raw)
    {
        $headers = array();
        $headerLines = explode("\r\n", $raw);
        foreach ($headerLines as $line) {
            $headerLine = trim($line);
            $kv = explode(':', $headerLine);
            if (count($kv) > 1) {
                $headers[$kv[0]] = trim($kv[1]);
            }
        }
        return $headers;
    }