Create webhook-url in formstack via api using php - php

Question

I want to create a webhook url for pitifuller form by id here is my code i don't know what is my mistake
define('CLIENT_ID', 'client_id');
define('CLIENT_SECRET', 'client_secret');
define('REDIRECT_URL', 'redirect url'); // for testing, use the URL to this PHP file.
define('AUTHORIZE_URL', 'https://www.formstack.com/api/v2/oauth2/authorize');
define('TOKEN_URL', 'https://www.formstack.com/api/v2/oauth2/token');
$ch = curl_init(TOKEN_URL);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array(
'grant_type' => 'authorization_code',
'client_id' => CLIENT_ID,
'redirect_uri' => REDIRECT_URL,
'client_secret' => CLIENT_SECRET,
'id' => 'id', // here is my id
'url' => 'web_hook_url' // here is my webhook url which i want to create
)));
// oauth2 contains the the access_token.
$oauth2 = json_decode(curl_exec($ch));

Answer 1

You did mistake in your CURL call, currently you are pass post data in GET form and you need to pass Like this(POST form/:id/webhook), and you can do this:
$ch = curl_init('https://www.formstack.com/api/v2/form/your-form-id/webhook');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Authorization: Bearer ' . $oauth2->access_token
));
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array(
'id' => $_POST['id'],
'url' => 'http://www.getbravo.com/formstack/index.php',
'append_data' => '1'
)));
and you get response like this
$forms = json_decode(curl_exec($ch));
print '<pre>';
print_r($forms);
print '</pre>';