Get subscribers of a list in mailchimp via api

        $apiKey = '';
        $url = 'https://us14.api.mailchimp.com/3.0/lists/LIST_ID/members';
        $ch = curl_init($url);

        curl_setopt($ch, CURLOPT_USERPWD, 'user:' . $apiKey);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        
        $result = curl_exec($ch);
        $err = curl_error($ch);
        curl_close($ch);

        if ($err) {
            echo "cURL Error #:" . $err;
        } else {
            return $result;
        }