Tor: how to check if ip has changed?

Question

PHP

I wrote a script that sends a signal to the torus about the change of intermediate links.

function tor_new_identity($tor_ip='127.0.0.1', $control_port='9051', $auth_code=''){
    $fp = fsockopen($tor_ip, $control_port, $errno, $errstr, 30);
    if (!$fp) return false;

    //авторизация
    fputs($fp, "AUTHENTICATE $auth_code\r\n");
    $response = fread($fp, 1024);
    list($code, $text) = explode(' ', $response, 2);
    if ($code != '250') return false; 

    //отправляю сигнал для смены промежуточных звеньев
    fputs($fp, "signal NEWNYM\r\n");
    $response = fread($fp, 1024);
    list($code, $text) = explode(' ', $response, 2);
    if ($code != '250') return false;
 
    fclose($fp);
    return true;
}

function get($url,$proxy) { 
    $ch = curl_init();   
    curl_setopt($ch, CURLOPT_URL,$url); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.9.0.1) Gecko/2008070208'); 
    curl_setopt($ch, CURLOPT_PROXY, "$proxy"); 
    $ss=curl_exec($ch); 
    curl_close($ch); 
    return $ss; 
}

if (tor_new_identity('127.0.0.1', '9051')) {
    $prox = 'localhost:9050';
    $a = get('http://ip.appspot.com/', $prox); 
    print($a);
}

Everything works, but the ip address does not change instantly, but after 2-3 seconds.
How can I check if the ip has changed or not?

Answer 1

see
- in Tor itself -
on 2IP.ru