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How To Get Chat Id of Users on telegram by there Mobile Number in PHP? – Telegram API

I have gone through many forums and API of telegram also.
But could not get the proper answer.

Well here is my main question.
I have list of users with their mobile numbers in my database and from all those, I want to send them messages on their telegram. So for that I will need their chat ID. How can I retrieve that by their MobileNumber? If I will have chat id, I am able to send message to them by using the following reference.

Telegram php example send message

I have visited the following link to get the chat id by manually from BOT by user itself. But I want automatic from script.

How to obtain Telegram chat_id for a specific user?

Thanks.

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3

Answers


  1. 0

    You can’t use bots to find a user on Telegram using their phone number.

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  2. 0

    I’m not familiar with PHP. but there is a way to do this:

    As you know you can send a contact in telegram bot using its phoneNumber and a firsName (Doesn’t need to be the real first name of the contact who owns that number).

    After sending the contact to a chatID(no matter what chatID you choose, can be your own personal chat ID), you can look for its UserID.

    Now if the person exists in Telegram you will get a long number that
    stands for his/her UserID or chatID but if not the long will be 0.

    In C# I used this piece of code to see whether a phone number exists in telegram or not and it worked very well.

    string s = "+44....";    //the phone number
var req2 = await bot.MakeRequestAsync(new SendContact(update.Message.Chat.Id, s, "Name"));
if(req2.Contact.UserId == 0)
{
  Console.WriteLine("The contact does not exist in Telegram");
}else
{
  Console.WriteLine("The contact exists in telegram with UserID:{0}",req2.Contact.UserId.ToString());
}

    I believe this can be done in PHP too.

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  3. 0

    By Telegram bot you can send messages only to users that started chat with your bot. you can obtain their chat_id (not phone number) from received query.

    So you can not send message to another people even if you have their phone numbers.

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