<?
$cihaz = $_POST["cihaz"];
$sayi=1;
for($x=1; $x<=254; $x++){
echo "
<tr class='odd'>
                    <th scope='row' id='r97'>$sayi</th>
                    <td>192.168.1.$x</td>
                    <td></td>
                </tr>
                </tbody>
";    
    if($x%$cihaz==0){
        echo "
                    <thead>
                <tr>
                    <th scope='col'>Nokta</th>
                    <th scope='col'>Ip Adresi</th>
                    <th scope='col'>Cihaz İsmi</th>
                </tr>
            </thead>";
            $sayi++;
}
}
?>