title: Send share button with telegram's bot into a channel
body: <p>I made a telegram bot. Now I want to send a share button for posts into channel.</p>
  
  <pre><code>$btn =array('inline_keyboard'=&gt;
      array(
          array(
              array(
                  'text'=&gt; 'share', 
                  'switch_inline_query'=&gt;"1111"
              )
          )   
      )
  );
  $btn = json_encode($btn);
  $content = array
      (
          'chat_id' =&gt; $id,
          'reply_markup' =&gt; $btn, 
          'text' =&gt; $textt,
      );
  $bot-&gt;sendMessage($content);
  </code></pre>
  
  <p>Now if I set a <strong>user_telegram_id</strong> of any user in instead of <strong>$id</strong>, this code works!
  But if I set the <strong>channel_telegram_id</strong> (in which the robot is admin) instead of <strong>$id</strong> this doesn't work! What should I do?</p>
  
  <p>( Also if I use <strong>url</strong> and do not use <strong>switch_inline_query</strong>, then this code works for bot <strong>channel_telegram_id</strong> and <strong>user_telegram_id</strong> and I have no problem in this case )</p>