MadelineProto/docs/TD_docs/methods/sendBotStartMessage.md

title	description
sendBotStartMessage	Invites bot to a chat (if it is not in the chat) and send /start to it. Bot can't be invited to a private chat other than chat with the bot. Bots can't be invited to broadcast channel chats and secret chats. Returns sent message. UpdateChatTopMessage will not be sent, so returned message should be used to update chat top message

Method: sendBotStartMessage

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Invites bot to a chat (if it is not in the chat) and send /start to it. Bot can't be invited to a private chat other than chat with the bot. Bots can't be invited to broadcast channel chats and secret chats. Returns sent message. UpdateChatTopMessage will not be sent, so returned message should be used to update chat top message

Params:

Name	Type	Required	Description
bot_user_id	int	Yes	Identifier of the bot
chat_id	InputPeer	Yes	Identifier of the chat
parameter	string	Yes	Hidden parameter sent to bot for deep linking (https: api.telegram.org/bots#deep-linking)

Return type: Message

Example:

$MadelineProto = new \danog\MadelineProto\API();
if (isset($token)) { // Login as a bot
    $this->bot_login($token);
}
if (isset($number)) { // Login as a user
    $sentCode = $MadelineProto->phone_login($number);
    echo 'Enter the code you received: ';
    $code = '';
    for ($x = 0; $x < $sentCode['type']['length']; $x++) {
        $code .= fgetc(STDIN);
    }
    $MadelineProto->complete_phone_login($code);
}

$Message = $MadelineProto->sendBotStartMessage(['bot_user_id' => int, 'chat_id' => InputPeer, 'parameter' => string, ]);

Or, if you're into Lua:

Message = sendBotStartMessage({bot_user_id=int, chat_id=InputPeer, parameter=string, })