New api break my old code

API
5

I’ve make this but don’t work.

$cho = curl_init();
    curl_setopt($cho, CURLOPT_URL, 'https://api.twitch.tv/kraken/oauth2/token');
    curl_setopt($cho, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($cho, CURLOPT_POST, 1);
    curl_setopt($cho, CURLOPT_POSTFIELDS, http_build_query([
        'client_id' => 'c533u8ntdp29h42xxzwfe0pf5v66dm',
        'client_secret' => 'REMOVED',
        'grant_type' => 'client_credentials',
        'code' => $_GET['code']
    ]));
    $output = curl_exec($cho);
    curl_close($cho);
    $oauth = json_decode($output, true);
    // start call API
    $all_channels = [];
    foreach($channels as $chans){
        if (count($chans) > 0) {
        $callAPI = implode('&user_login=', $chans);
        $url="https://api.twitch.tv/helix/streams?user_login=" . $callAPI;
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_URL,$url);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            'Authorization: Bearer ' $oauth ''
            'Client-ID: c533u8ntdp29h42xxzwfe0pf5v66dm'
        ));
        $result = curl_exec($ch);
        $i = curl_getinfo($ch);
        curl_close($ch);