send message to telegram channel by bot - php

Question

i make a telegram bot with telegram botfather and i make my bot as admin in my public telegram channel , now i want to send message in channel by bot, this is my code for this work :
send.php code is :
<?php
require('telegram-bot-api.php');
$token = '10**************************************jM';
$bot = new telegram_bot($token);
$to = '#myChannel';
$rs = $bot->send_message($to , 'test' , null, null);
print_r($rs);
?>
and telegram-bot-api.php code is :
<?php
class ReplyKeyboardMarkup{
public $keyboard;
public $resize_keyboard;
public $one_time_keyboard;
public $selective;
function __construct($resize_keyboard=FALSE, $one_time_keyboard = FALSE, $selective=FALSE){
$this->keyboard=array();
$this->keyboard[0]=array();
$this->resize_keyboard=$resize_keyboard;
$this->one_time_keyboard=$one_time_keyboard;
$this->selective=$selective;
}
public function add_option($option){
$this->keyboard = $option;
}
}
class ReplyKeyboardHide{
public $hide_keyboard;
public $selective;
function __construct($hide_keyboard=TRUE, $selective = FALSE){
$this->hide_keyboard=$hide_keyboard;
$this->selective=$selective;
}
}
class ForceReply{
public $force_reply;
public $selective;
function __construct($force_reply=TRUE, $selective = FALSE){
$this->force_reply=$force_reply;
$this->selective=$selective;
}
}
class telegram_bot{
private $token;
private function open_url($url, $method="GET", $data=null){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
if($method==="POST"){
if(isset($data)){
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
}
}
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
return curl_exec($ch);
}
private function control_api($action, $data=NULL){
$token = $this->token;
$response = json_decode($this->open_url("https://api.telegram.org/bot$token$action", "POST", $data));
return $response;
}
function __construct($token){
$this->token=$token;
}
public function status(){
$response = $this->control_api("/getme");
return($response);
}
public function get_updates(){
$response = $this->control_api("/getUpdates");
return($response);
}
public function send_action($to, $action){
$data = array();
$data["chat_id"]=$to;
$data["action"]=$action;
$response = $this->control_api("/sendChatAction", $data);
return $response;
}
public function send_message($to, $msg, $id_msg=null, $reply=null){
$data = array();
$data["chat_id"]=$to;
$data["text"]=$msg;
$data["disable_web_page_preview"]="true";
if(isset($id_msg))
$data["reply_to_message_id"]=$id_msg;
if(isset($reply))
$data["reply_markup"]=$reply;
$response = $this->control_api("/sendMessage", $data);
return $response;
}
public function send_location($to, $lat, $lon, $id_msg=null, $reply=null){
$data = array();
$data["chat_id"]=$to;
$data["latitude"]=$lat;
$data["longitude"]=$lon;
if(isset($id_msg))
$data["reply_to_message_id"]=$id_msg;
if(isset($reply))
$data["reply_markup"]=$reply;
$response = $this->control_api("/sendLocation", $data);
return $response;
}
public function send_sticker($to, $sticker, $id_msg=null, $reply=null){
$data = array();
$data["chat_id"]=$to;
if(file_exists($sticker))$sticker="#".$sticker;
$data["sticker"]=$sticker;
if(isset($id_msg))
$data["reply_to_message_id"]=$id_msg;
if(isset($reply))
$data["reply_markup"]=$reply;
$response = $this->control_api("/sendSticker", $data);
return $response;
}
public function send_video($to, $video, $id_msg=null, $reply=null){
$data = array();
$data["chat_id"]=$to;
if(file_exists($video))$video="#".$video;
$data["video"]=$video;
if(isset($id_msg))
$data["reply_to_message_id"]=$id_msg;
if(isset($reply))
$data["reply_markup"]=$reply;
$response = $this->control_api("/sendVideo", $data);
return $response;
}
public function send_photo($to, $photo, $caption, $id_msg=null, $reply=null){
$data = array();
$data["chat_id"]=$to;
if(file_exists($photo))$photo="#".$photo;
$data["photo"]=$photo;
if(isset($caption)){
$data["caption"]=$caption;
}
if(isset($id_msg)){
$data["reply_to_message_id"]=$id_msg;
}
if(isset($reply))
$data["reply_markup"]=$reply;
$response = $this->control_api("/sendPhoto", $data);
return $response;
}
public function send_audio($to, $audio, $id_msg=null, $reply=null){
$data = array();
$data["chat_id"]=$to;
if(file_exists($audio))$audio="#".$audio;
$data["audio"]=$audio;
if(isset($id_msg)){
$data["reply_to_message_id"]=$id_msg;
}
if(isset($reply))
$data["reply_markup"]=$reply;
$response = $this->control_api("/sendAudio", $data);
return $response;
}
public function send_document($to, $document, $id_msg=null, $reply=null){
$data = array();
$data["chat_id"]=$to;
if(file_exists($audio))$document="#".$audio;
$data["document"]=$document;
if(isset($id_msg)){
$data["reply_to_message_id"]=$id_msg;
}
if(isset($reply))
$data["reply_markup"]=$reply;
$response = $this->control_api("/sendDocument", $data);
return $response;
}
public function forward_message($to, $from, $msg_id){
$data = array();
$data["chat_id"]=$to;
$data["from_chat_id"]=$from;
$data["message_id"]=$msg_id;
$response = $this->control_api("/forwardMessage", $data);
return $response;
}
public function set_webhook($url=null){
$data = array();
$data["url"]=$url;
$response = $this->control_api("/setWebhook", $data);
return $response;
}
public function get_user_profile_photos($id_user, $offset=null, $limit=null){
$data = array();
$data["user_id"]=$id_user;
if(isset($offset)){
$data["offset"]=$offset;
}
if(isset($limit)){
$data["limit"]=$limit;
}
$response = $this->control_api("/getUserProfilePhotos", $data);
return $response;
}
public function read_post_message(){
return json_decode(file_get_contents('php://input'));
}
}
?>
but when run send.php not send message to channel but when i replace chat_id with private chat_id or group chat_id , this code done very cool and send a message to group or my contact
Excuse me for my English language , sory :)

Answer 1

solved , i tested with httpRequster plugin for send a post request to this link :
https://api.telegram.org/bot1*******************************M/sendMessage
and posted parameters is :
chat_id = #myChannel_username
text = myMessage
i don't know why not worked my old code but work this request :D
any way thanks.

Answer 2

Bot has to be an admin of the channel for it to be able to send messages. None of the clients can help you make a bot an admin of a channel. Are you sure your bot is an admin of the channel?
Source: https://core.telegram.org/bots/api-changelog#october-8-2015

Answer 3

curl has this problem for SSL.
add this code to Solve problem :
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

Answer 4

You can also use numeric chat_id of your channel/group/account to make bot sent messages.
Easy way to get chat_id is to forward any message from your channel to bot called #userinfobot.