Get followers by api via PHP

API
5

Thank you
So now I Try to get (name to id) but “Invalid OAuth token”
with that code : (I try to put in oauth secret, also i try to get it by this doc https://dev.twitch.tv/docs/authentication/getting-tokens-oauth):

        <?php
        header('Content-Type: application/json');
        $videosApi = 'https://api.twitch.tv/helix/users?login=pokanoname&login=pokanoname';
        $clientId = client'id';
        $ch = curl_init();

        curl_setopt_array($ch, array(
            CURLOPT_HTTPHEADER => array(
                "Accept: application/vnd.twitchtv.v5+json",
                'Client-ID: ' . $clientId,
                "Authorization: OAuth oauth_code"
            ),
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_URL => $videosApi
        ));

        $response = curl_exec($ch);
        curl_close($ch);

        $json = json_decode($response, JSON_PRETTY_PRINT);

        print_r($json);