get number of elements in POST

[ober0330]

I have a page where a user will be entering numbers into text boxes. The number of textboxes will vary, and I need to update a database with the values entered in these boxes.

So is there a way to determine how many values are being passed in the POST method?

something like:

While($check==1)
{
$box=databox$i;
if($_POST[$box]!="")
{
 /// run SQL query to update DB for that value
}
else
  check=0;
$i++;
} 

Something close to that... !?