I have changed $ch with $dataArray but not work
// code.. //
$callAPI = implode(",",$channels);
$dataArray = curl_init('https://api.twitch.tv/kraken/streams?channel=' . $callAPI);
curl_setopt($dataArray, CURLOPT_HTTPHEADER, array(
'Accept: application/vnd.twitchtv.v5+json',
'Client-ID: XXX'
));
if(is_array($dataArray)){
foreach($dataArray['streams'] as $mydata){
// code //