How to save username or channel id of our website user in our database to stream their channel on twitch

Can you please provide the link to logout after i have run following code to extract user info:
$curl = curl_init(‘https://api.twitch.tv/kraken/user’);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); // Disables SSL verification
curl_setopt($curl, CURLOPT_HTTPHEADER, array(
‘Accept: application/vnd.twitchtv.v5+json’,
'Client-ID: ’ . $client_id,
'Authorization: OAuth ’ . $result[‘access_token’]
));
$user = curl_exec($curl);