Twitter API returns NULL on XAMPP

Question

I'm trying to make a call to the Twitter API.

In short my problem is the same one as described here. Making my call I get NULL on a var_dump() of the result.

However

cURL works fine, I have included the newest version of the twitter-api-php script and all the tokens, keys and secrets are correct.

I'm working on a local XAMPP installation. Does this cause the problem? But it seems to work for other people. Is php configured wrong in my case? Or did I simply miss a semicolon (which I doubt because I don't get any errors)?

Here is my code:

ini_set('display_errors', true);
require_once('.\libs\TwitterAPIExchange.php');

$settings = array(
    'oauth_access_token' => '############',
    'oauth_access_token_secret' => '############',
    'consumer_key' => '########',
    'consumer_secret' => '###########'
);

$url = 'https://api.twitter.com/1.1/statuses/user_timeline.json';

$requestMethod = "GET";

$getfield = '?screen_name=J7mbo';

$twitter = new TwitterAPIExchange($settings);
$response = $twitter->setGetfield($getfield)
                    ->buildOauth($url, $requestMethod)
                    ->performRequest();

var_dump(json_decode($response));

Answer 1

Like Jimbo pointed out in the comments above, the solution can be found here

According to the article, the Windows PHP distribution doesn't come with an up-to-date bundle of the CA root certificates. However, the bundle can be downloaded here. I put it under C:\xampp\php\cacert.pem.

The second step is to add curl.cainfo=c:\xampp\php\cacert.pem at the end of your php.ini file. Change the path to your folder where you saved the .pem-file.

Restart Apache and now the problem should be solved!

Thanks!