Issue sending headers to Rest API - php

Question

I have to write to an API, and nothing seems to work. When I use apitester.com it works though. When I use my app, it doesn't. I output the headers and payload and they look the same between the two, so I am assuming I'm doing something wrong. Here is my PHP to send data to the API
<?php
$email = $_POST['email'];
$expired = NULL;
$funded = TRUE;
$data = array(
"email" => $email,
"expired" => $expired,
"funded" => $funded
);
$url = 'https://my.rest.api';
$json_string = json_encode($data);
$headers = array (
"Content-Type: application/json",
"Authorization: Bearer xxx"
);
$channel = curl_init($url);
curl_setopt($channel, CURLOPT_RETURNTRANSFER, true);
curl_setopt($channel, CURLOPT_CUSTOMREQUEST, "PUT");
curl_setopt($channel, CURLOPT_HTTPHEADER, $headers);
curl_setopt($channel, CURLOPT_POSTFIELDS, $json_string);
curl_setopt($channel, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($channel, CURLOPT_CONNECTTIMEOUT, 10);
$statusCode = curl_getInfo($channel, CURLINFO_HTTP_CODE);
curl_exec($channel);
http_response_code($statusCode);
if ( $statusCode != 200 ){
echo "Data submitted was ".$json_string." Returned status code: {$statusCode} \n".curl_error($channel);
} else {
echo $response;
}
//I turn the below 2 lines on and off to see what I am actually sending
// print_r($headers);
// echo $json_string;
curl_close($channel);
?>
I get the returned status code of "0" on my app, but "200" using the tester. Is there something obviously wrong with the curl options I am sending?

Answer 1

If you got status 0, it means that the HTTP request didn't complete at all. You can use the following functions to find out what error happened:
curl_errno
curl_errstr
Sidesnotes:
You're echoing $response, but that variable doesn't exist.
Using CURLOPT_SSL_VERIFYPEER is a really bad idea. Make sure you remove it before you go to production.