if($curl_cli=curl_init()) {
    // long live cURL
    curl_setopt($curl_cli, CURLOPT_URL, 'http://root:root4321@192.168.88.222/axis-cgi/param.cgi?action=list');
    curl_setopt($curl_cli, CURLOPT_RETURNTRANSFER,true);
    $out = curl_exec($curl_cli);
    echo 'response:'.$out;
    curl_close($curl_cli);
}
else {
    echo('curl error');

   curl_setopt($curl_cli, CURLOPT_URL, 'http://192.168.88.2/axis-cgi/param.cgi?action=list');
    curl_setopt($curl_cli, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
    curl_setopt($curl_cli, CURLOPT_USERPWD,"root:root4321");
    curl_setopt($curl_cli, CURLOPT_RETURNTRANSFER,true);
    $out = curl_exec($curl_cli);
    echo 'response:'.$out.'!';
    echo(curl_error($curl_cli));
    curl_close($curl_cli);