Upload file with curl php by custom header - php

Question

This headers sends by my programs to a adress:
--55ae49448a20c
Content-Disposition: form-data; name="chat_id"
Content-Length: 9
108432389
--55ae49448a20c
Content-Disposition: form-data; name="photo"; filename="Untitled.png"
Content-Length: 16252
Content-Type: image/png
PNG
I want to POST 2 varibles (chat_id) and (photo) by the following code.
Attempted Code:
<?php
$params = "Content-Disposition: form-data; name=\"chat_id\"\r\n"
. "Content-Length: 9\r\n\r\n"
. "\r\n"
. "Content-Disposition: form-data; name=\"photo\"; filename=\"Untitled.png\"\r\n"
. "Content-Length: ".filesize("Untitled.png")."\r\n"
. "Content-Type: image/png\r\n\r\n"
. file_get_contents("Untitled.png");
$request_headers = array();
$request_headers[] = 'Content-Length: ' . strlen($params);
$url = 'http://example.com';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
curl_setopt($ch, CURLOPT_PROXY, '127.0.0.1:8888');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_HTTPHEADER, $request_headers);
$reply = curl_exec($ch);
?>
Is there any other way for do that !?
My attempted code gives me 400 Bad Gatway error..

Answer 1

That's TOTALLY unnecessary. You're doing way too much that CURL can do far better (and properly) itself.
$post = array(
'chat_id' => 108432389,
'photo' => '#Untitled.jpg'
);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
old-school php curl used # in the value field to signify a file to be uploaded. Newer versions use curlfile instead.