Google\Cloud\PubSub\Message::attribute PHP Method

Example: echo $message->attribute('browser-name');

public attribute ( string $key ) : string \| null
$key	string	The attribute key
return	string \| null

    public function attribute($key)
    {
        return isset($this->message['attributes'][$key]) ? $this->message['attributes'][$key] : null;
    }

Message