title: How to send empty message in telegram bot?
body: <p>I have this keyboard in my telegram bot:</p>
  
  <p><a href="https://i.stack.imgur.com/iqzsp.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/iqzsp.jpg" alt="enter image description here"></a></p>
  
  <p>When i click the right arrow i get this new keyboard:</p>
  
  <p><a href="https://i.stack.imgur.com/AmNXW.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/AmNXW.jpg" alt="enter image description here"></a></p>
  
  <p>the code is this:</p>
  
  <pre><code>    $url = $GLOBALS["website"]."/sendMessage?chat_id=".$chatID."&amp;text=''&amp;parse_mode=html&amp;reply_markup=".json_encode($keyboard3);
      file_get_contents($url);
  </code></pre>
  
  <p>I know that text is required in sendmessage method, but i'm searching a way or workaround to send an empty message.</p>
  
  <p>I've tried with space or similar html entity, but i did not suceed.</p>
  
  <p>There is a way to do this?</p>
  
  <p>Thank you.</p>