Can not get result from Array

Hi all,

I have a ip class which gets an ip address and then out puts the information in an array which can then be split down to show certain information only.  My problem is that when i try to change the result that i want, it just says the word array.  For example if i try to change

 $IP[admin-c'] 

  to say descr, or org  instead of the admin-c the result just says Array and it doesn't give a value, however if i change it back it works fine.

below are my two peices of code.

include("ipology.class.php");
$ipology = new ipology(array("94.30.9.163"));
$out = $ipology->out();
foreach($out as $ip)
{
    if(is_array($ip))
    {
        echo "Block: " . $ip['admin-c'] . "\n";
        echo "Country: " . $ip['country'] . "\n";
        echo "Netname: " . $ip['netname'] . "\n";
        echo "Person: " . implode(", ", (array) $ip['person']) . "\n";
        echo "------------------------------\n";
    }
    else
    {
        echo "ERR: $ip\n------------------------------\n";
    }
}

class ipology
{
    var $_ip = "255.255.255.255";
    var $_whois = "whois.ripe.net";
    var $_port = 43;
    var $_timeout = 10;
    var $_buffer = "";
    var $out = array();
    var $array_return_mode;
    var $_total = 0;

    function ipology($ip_array, $array_return_mode = "array")
    {
        $this->array_return_mode = $array_return_mode;
        $ip_array = (array) $ip_array;
        $this->_total = count($ip_array);
        $i = 0;
        foreach($ip_array as $ip)
        {
            if($this->isValidIP($ip))
            {
                $this->_ip = $ip;
                if($this->_fetch())
                {
                    $this->out[$ip] = $this->_extract();
                    if($this->out[$ip]["inetnum"] == "0.0.0.0 - 255.255.255.255")
                        $this->out[$ip] = 102;
                }
                else
                {
                    $this->out[$ip] = 101; //could not connect
                }
            }
            else
                $this->out[$ip] = 100; //incorrect IP format
        }
    }

    function _fetch()
    {
        if(!$sock = @fsockopen($this->_whois, $this->_port, &$errno, &$errstr, 10))
            return false;
        else
        {
            fputs($sock, "{$this->_ip}\n");
            while(!feof($sock))
                $buffer .= fgets($sock, 10240);
            fclose($sock);
            $this->_buffer = $buffer;
            return true;
        }
    }

    function _extract()
    {
        $ret = array();
        $w = array("inetnum","org","netname","descr","country","admin-c","tech-c","status","mnt-by","mnt-lower","mnt-routes","source","organisation","org-name","org-type","address","phone","fax-no","e-mail","mnt-ref","person","nic-hdl","route","origin");
        foreach($w as $get)
        {
            if(preg_match_all("/$get:\s*(.*+)/i", $this->_buffer, $matches))
            {
                if(count($matches[1]) > 1)
                {
                    if($this->array_return_mode == "array")
                        $ret[$get] = $matches[1];
                    else
                        foreach($matches[1] as $ras)
                            $ret[$get] .= $ras . "\n";
                }
                else
                    $ret[$get] = $matches[1][0];
            }
        }
        return $ret;
    }

    function isValidIp($ip)
    {
        return preg_match("/(??:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/", $ip) ? true : false;
    }

    function out($w=0)
    {
        return $this->out;
    }
}

Any advice would be much appreciated.

Thanks