//МЕТОД ПОЛУЧЕНИЯ НЕЗАНЯТЫХ АБОНЕНТОМ IP-АДРЕСОВ//ОЧЕНЬ БЫДЛОКОД!!!
$customer_internet_ip = array(); //Массив назначенных абоненту адресов, определенных под интернет
$customer_ip = array(); //Массив назначенных абоненту адресов
$customer_free_ip = array(); //Массив свободных адресов абонента
 
foreach ($data['uslugi'] as $usluga) 
{
    if (stristr($usluga['ip'], '-')) 
    {
        $tmp_arr = array();
        $tmp_arr = explode('-', $usluga['ip']);
        $customer_internet_ip[] = $tmp_arr[0];
        $customer_internet_ip[] = $tmp_arr[1];
    }
    else
    {
        $customer_ip[] = $usluga['ip'];
    }
}
 
$customer_ip_4octs = array();
$customer_subnet = "";
foreach ($customer_internet_ip as $ip) 
{
    $tmp_ip = explode('.', $ip);
    $customer_ip_4octs[] = $tmp_ip[3];
    $customer_subnet = $tmp_ip[0].'.'.$tmp_ip[1].'.'.$tmp_ip[2].'.';
}
 
$used_ip_4octs = array();
 
for ($i=$customer_ip_4octs[0]; $i <= $customer_ip_4octs[1] ; $i++) 
{ 
    $used_ip_4octs[] = $i;
}
 
foreach ($used_ip_4octs as $ip) 
{
    $customer_ip[] = $customer_subnet.$ip;
}
 
$ip_count = 0;
$podset = substr($podset_customer[0]['podset'], -2);
 
if ($podset == 30)
    $ip_count = 4;
if ($podset == 29)
    $ip_count = 8;
if ($podset == 28)
    $ip_count = 16;
if ($podset == 27)
    $ip_count = 32;
 
for ($i=0; $i < $ip_count ; $i++) 
{ 
    $tmp_ip = min($used_ip_4octs);
    $tmp_ip += $i;
    $customer_free_ip[] = $customer_subnet.$tmp_ip;
}
 
$availavle_ip = array_diff($customer_free_ip, $customer_ip);
$data['free_ip'] = $availavle_ip;

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