Code from API streams in my website

Thank you matt_thomas for the support, but I’m not familiarize with cURL command, what am I supposed to do? I created my own Client-ID and I put in:

$clientID = array(
“Client-ID: kgvf8epqezfb5u3wwmlc58n681v5jj”
);

$dataArray = json_decode(@file_get_contents_curl(‘https://api.twitch.tv/kraken/streams/?game=Overwatch&limit=25&client_id=kgvf8epqezfb5u3wwmlc58n681v5jj’), true);

but didn’t work