1000 times an application that allows the server to assign ip from the server as a result of the trial

function assignIP() {
    $ip_pool = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
    $ip_pool_length = count($ip_pool);
    $used_ip_pool = [];
    for ($i=0; $i < 1000; $i++) { 
        $use_ip = $ip_pool[rand(0, $ip_pool_length - 1)];
        $used_ip_pool[] = $use_ip;
    }
    $counts = array_count_values($used_ip_pool);
    ksort($counts);
    echo "<pre>";
    print_r($counts);
    echo "</pre>";
}