I am trying to verify Whatsapp business webhook, codeigniter rest configuration format is set as below

$config['rest_default_format'] = 'json';

And sending the response using the following

$wchalng = $this->get('hub_challenge');
$this->response($wchalng, 200)

When i try to verify webhook, i receive the following error:

The URL couldn't be validated. Response does not match challenge, expected value="391067291", received="\"391067291\""

When I use postman, the result is "391067291" with double quotes, but it seems Facebook requires the result to be without any quotes 391067291. I tried using:

stripcslashes($this->response($wchalng, 200));
json_decode($this->response($wchalng, 200));

but none of the above worked! I also tried to change from json to html for the rest_default_format without any success.
Any help on how to get rid of the double quotes in codeigniter rest response would be highly appreciated.

CodePudding user response：

After trying different things, finally I was able to get a successful verification.
All I needed is to convert the received string into integer to remove the double quotes.

$wchalng = intval($this->get('hub_challenge'));