Telegram BotApi, Send message to multiple chat_id

There is no way to make bot to sendMessage to multiple chat id but there is a trick that can fix it for now :)
Why not sending each chat id a message ?!
Let's look at this example in PHP :

<?php$message = "Hi John";$chatIds = array("xxx","xxx","xxx"); // AND SOME MOREforeach($chatIds as $chatId) {    // Send Message To chat id    file_get_contents("https://api.telegram.org/botTOKKEN/sendMessage?chat_id=$chatId&text=".$message);}?>

In addition to @farsad 's answer: Add sleep(NUMBER_OF_SECONDS); inside the foreach loop to not get banned by telegram. As there is a limit of 30 messages per second for bots in Telegram API

The problem with foreach or any other massive sendMessage is that the API will not allow more than ~30 messages to different users per second.

According to Bots FAQ in telegram site:

How can I message all of my bot's subscribers at once?
Unfortunately, at this moment we don't have methods for sending bulk messages, e.g. notifications. We may add something along these lines in the future.
In order to avoid hitting our limits when sending out mass notifications, consider spreading them over longer intervals, e.g. 8-12 hours. The API will not allow more than ~30 messages to different users per second, if you go over that, you'll start getting 429 errors. You can't send message this way to all user.

and solution in Bots FAQ page:

My bot is hitting limits, how do I avoid this?
When sending messages inside a particular chat, avoid sending more than one message per second. We may allow short bursts that go over this limit, but eventually you'll begin receiving 429 errors.
If you're sending bulk notifications to multiple users, the API will not allow more than 30 messages per second or so. Consider spreading out notifications over large intervals of 8—12 hours for best results.
Also note that your bot will not be able to send more than 20 messages per minute to the same group.