Telegram BOT Api: how to send a photo using PHP? - php

Question

The sendPhoto command require an argument photo defined as InputFile or String.
The API doc tells:
Photo to send. You can either pass a file_id as String to resend a photo
that is already on the Telegram servers, or upload a new photo using
multipart/form-data.
And
InputFile
This object represents the contents of a file to be uploaded. Must be
posted using multipart/form-data in the usual way that files are
uploaded via the browser.
So I tried this method
$bot_url = "https://api.telegram.org/bot<bot_id>/";
$url = $bot_url . "sendPhoto?chat_id=" . $chat_id;
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
"Content-Type:multipart/form-data"
));
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array(
"photo" => "#/path/to/image.png",
));
curl_setopt($ch, CURLOPT_INFILESIZE, filesize("/root/dev/fe_new.png"));
$output = curl_exec($ch);
The curls is executed, but Telegram reply this to me:
Error: Bad Request: Wrong persistent file_id specified: contains wrong
characters or have wrong length
I also tried replacing #/path... with a file_get_contents, but in this case Telegram give me an empty reply (and curl_error is empty !).
What the way to send a photo to telegram using php + curl ?

Answer 1

This is my working solution, but it requires PHP 5.5:
$bot_url = "https://api.telegram.org/bot<bot_id>/";
$url = $bot_url . "sendPhoto?chat_id=" . $chat_id ;
$post_fields = array('chat_id' => $chat_id,
'photo' => new CURLFile(realpath("/path/to/image.png"))
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
"Content-Type:multipart/form-data"
));
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
$output = curl_exec($ch);

Answer 2

This code helps me alot which I get from php.net website here
Visit http://php.net/manual/en/class.curlfile.php#115161
(Vote Up this code in php website).
I just change headers in this code for telegram bot to send image just copy this function
function curl_custom_postfields($ch, array $assoc = array(), array $files = array()) {
// invalid characters for "name" and "filename"
static $disallow = array("\0", "\"", "\r", "\n");
// build normal parameters
foreach ($assoc as $k => $v) {
$k = str_replace($disallow, "_", $k);
$body[] = implode("\r\n", array(
"Content-Disposition: form-data; name=\"{$k}\"",
"",
filter_var($v),
));
}
// build file parameters
foreach ($files as $k => $v) {
switch (true) {
case false === $v = realpath(filter_var($v)):
case !is_file($v):
case !is_readable($v):
continue; // or return false, throw new InvalidArgumentException
}
$data = file_get_contents($v);
$v = call_user_func("end", explode(DIRECTORY_SEPARATOR, $v));
$k = str_replace($disallow, "_", $k);
$v = str_replace($disallow, "_", $v);
$body[] = implode("\r\n", array(
"Content-Disposition: form-data; name=\"{$k}\"; filename=\"{$v}\"",
"Content-Type: image/jpeg",
"",
$data,
));
}
// generate safe boundary
do {
$boundary = "---------------------" . md5(mt_rand() . microtime());
} while (preg_grep("/{$boundary}/", $body));
// add boundary for each parameters
array_walk($body, function (&$part) use ($boundary) {
$part = "--{$boundary}\r\n{$part}";
});
// add final boundary
$body[] = "--{$boundary}--";
$body[] = "";
// set options
return #curl_setopt_array($ch, array(
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => implode("\r\n", $body),
CURLOPT_HTTPHEADER => array(
"Expect: 100-continue",
"Content-Type: multipart/form-data; boundary={$boundary}", // change Content-Type
),
));
}
Basic Try:Now just use this code by sending photo name with path and chat id
here is it how:-
$array1=array('chat_id'=><here_chat_id>);
$array2=array('photo'=>'index.jpg') //path
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"https://api.telegram.org/<bot_token>/sendPhoto");
curl_custom_postfields($ch,$array1,$array2);//above custom function
$output=curl_exec($ch);
close($ch);
For sending png or other methods change curl_custom function according to your need.

Answer 3

I searched a lot online but didn't find the answer. But, your question solved my problem ... I just changed your code and that answered it for me ...
I changed your code to this:
$chat_id=chat Id Here;
$bot_url = "https://api.telegram.org/botYOUR_BOT_TOKEN/";
$url = $bot_url . "sendPhoto?chat_id=" . $chat_id;
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
"Content-Type:multipart/form-data"
));
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array(
"photo" => "#path/to/image.png",
));
curl_setopt($ch, CURLOPT_INFILESIZE, filesize("path/to/image.png"));
$output = curl_exec($ch);
print$output;

Answer 4

You can use this API: https://github.com/mgp25/Telegram-Bot-API
example:
$tg->sendPhoto($chat_id, $image, $caption);
You can use either a stored image or URL.

Answer 5

<?php
$BASH_Command='curl -s -X POST "https://api.telegram.org/bot<YourToken>/sendPhoto?chat_id=<YourID>" -F photo="#/path/to/imagefile.jpeg" -F caption="TheImage" > /dev/null &';
echo exec($BASH_Command);
?>

Answer 6

This a bad idea, but you can use some like that:
#!/bin/bash
set -x
set -e
BDIR=/tmp/${RANDOM}
TG_TOKEN=""
TG_CHAT_ID=
mkdir -p ${BDIR}
chmod -R 777 ${BDIR}
su postgres -c "pg_dumpall -f ${BDIR}/postgre.sql"
tar czf ${BDIR}/${HOSTNAME}.tar.gz /var/lib/grafana/ /etc/grafana/ ${BDIR}/postgre.sql
curl -F caption="$(date)" -F chat_id="${TG_CHAT_ID}" -F document=#"${BDIR}/${HOSTNAME}.tar.gz" https://api.telegram.org/bot${TG_TOKEN}/sendDocument
rm -rf ${DBIR}

Answer 7

I thought I should extend the answer to include uploading from an external url but it still involves a process of saving the image to a folder first. Then I added a caption to the image.
$bot_url = "https://api.telegram.org/bot<bot_id>/";
$url = $bot_url . "sendPhoto?chat_id=" . $chat_id ;
$caption = 'Telegram Image SendPhoto function';
$img = '/path/to/save_image.png'; //local path where image should be saved
/* Get the image from the URL and save to your own path. You need to add
allow_url_fopen=On to your php.ini file for the below code to work */
file_put_contents($img, file_get_contents("https://your_image.com/pic.jpg"));
$post_fields = array('chat_id' => $chat_id,
'photo' => new CURLFile(realpath($img)),
'caption' => $caption
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
"Content-Type:multipart/form-data"
));
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
$output = curl_exec($ch);
curl_close($ch); //close curl
That's all!