Telegram bot keyboard with emoji
<p>I'm creating a bot in php and I need to use in keyboard some emoji.</p>

<p>I've no problem to use <code>3bit</code> emoji (like <code>2b50</code> for medium star).</p>

<p>Here's a url sent to Telegram </p>

<p><code>https://api.telegram.org/bot&lt;bot_token&gt;/sendMessage?chat_id=&lt;chat_id&gt;&amp;text=Ciao+Andrea!&amp;reply_markup={%22keyboard%22%3A[[%22\u2b50+TEST%22%2C%22\%2FTEST+0%22]%2C[%22\%2FTest2%22%2C%22test3%22]]%2C%22resize_keyboard%22%3Atrue%2C%22one_time_keyboard%22%3Atrue}</code></p>

<p>How can I use 4bit emoji?</p>