Untitled

<?php
$start=$_REQUEST["start"];
$end=$_REQUEST["end"];
$step=$_REQUEST["step"];
?>

<html>
<head></head>
<body bgcolor="#DBA901">
<?php
do{
echo"<table border='1'><td><tr>$start</tr></td></table>";
$start++;
$a=$start + ($step-1);
$start=$a;
}
while
($start <= $end);
?>

</body>
</html>