Thanks.
Does this work:
PHP Code:
//we place all the values into an array so we can run a function on them
$values = @array($HD, $VD, $TD, $Dv, $Dh, $PC, $FC, $V, $A, $W, $FA, $MFv, $MFh, $GT1, $GT2);
//we check to see if the user has filled in at least two variables
function atLeastTwo($values)
{
$counter = 0;
foreach ($values as $value)
{
if ($value !== null)
{
$counter++;
if ($counter == 2)
{
return false;
}
}
}
return true;
}
if (atLeastTwo($values))
{
die "You Must fill in at least two fields before calculating";
}