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need to cycle thru if item is present and add descriptions with prices

how do i make this php code work please.
im trying to check if item 1 thru 4 has a value if it does it builds a string to display the description and value of each item
im having trouble with adding another value the current routine does not cycle till done only reads one item

i have a while loop going but i am unsure of how to add that to the loop

thank you in advance for any help and code you may provide

while($i <= 4)
{
  if($HTTP_POST_VARS["item$i"] != NULL)
  {
    if($count == 0)
      $items .= $HTTP_POST_VARS["item$i"];
    else
      $items .= ",".$HTTP_POST_VARS["item$i"];
 
      $count++;
  }
  $i++;
  next;
}
 
  print "Thank you, ".$HTTP_POST_VARS['FirstName']." For your order.<BR> Item(s) purchased are: ".$items . "<BR>";
 
____________________________________________
 
 
    // Add items to the cart
 
 
$subTaxTotal=0;
$x_Amount=0;
$x_Description="";
 
if (isset($_POST['item1'])) {
$subTotal =$Loft_Price;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;
 
    $x_Description = "Loft Bed Rental ( Wittenberg ONLY) - Space-saving comfortable loft bed";
    $x_Amount=$subTaxTotal;
 
}
 
if (isset($_POST['item2'])) {
$subTotal =$MicroFride_Price;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;
 
    $x_Description = "MicroFridge Rental - Compact 2 door fridge and freezer with attached microwave";
    $x_Amount=$subTaxTotal;
	}
 
if (isset($_POST['item3'])) {
$subTotal =$Safe_Rental;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;
    $x_Description = "Electronic Safe Rental - 1.19 cu. ft. Electronic Safe";
    $x_Amount=$subTaxTotal;
}
 
if (isset($_POST['item4'])) {
$subTotal =$Safe_Purchase_Price;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;
 
    $x_Description = "Electronic Safe Purchase - 1.19 cu. ft. Electronic Safe";
    $x_Amount=$subTaxTotal;
 
}
 
else {
    $x_Description = "error: no items found - didnt capture posted item";
    $x_Amount=$subTaxTotal;
 
}

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musicmasteria

I'm confused what you are trying to do.

First thing I notice is this:
$items .= $HTTP_POST_VARS["item$i"];

I believe that $i should have { } around it, ex:
$items .= $HTTP_POST_VARS["item{$i}"];

Next thing, (with previous thing changed)
if($count == 0)
$items .= $HTTP_POST_VARS["item{$i}"];
// ----- Why no $count++; here?
else
$items .= ",".$HTTP_POST_VARS["item{$i}"];

$count++;
}

Next thing after that,
if (isset($_POST['item1'])) {
$subTotal =$Loft_Price;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;

$x_Description = "Loft Bed Rental ( Wittenberg ONLY) - Space-saving comfortable loft bed";
$x_Amount=$subTaxTotal;

}

That could be a while loop with a count variable replacing 1 in:
if (isset($_POST['item1'])) {

You would have to have a total item count for that to work but it would make your script allow for more variable numbers of items

I fixed a couple other things in the code as well and attached it below (but I didn't test it)
Try it out and see if it works

$i = 1; //before it was NULL I believe
while($i <= 4){
  if($HTTP_POST_VARS["item$i"] != NULL){
    if($count == 0){ // YOU FORGOT THESE
      $items .= $HTTP_POST_VARS["item{$i}"];
      $count++;
    }else{ // These Too
      $items .= ",".$HTTP_POST_VARS["item{$i}"];
      $count++;
    } // And this :P lol
  }
  $i++;
  //next; <-- what was this?
}
 
  print "Thank you, ".$HTTP_POST_VARS['FirstName']." For your order.<BR> Item(s) purchased are: ".$items . "<BR>";
 
//____________________________________________
 
 
    // Add items to the cart
 
 
$subTaxTotal=0;
$x_Amount=0;
$x_Description="";
 
if (isset($_POST['item1'])) {
$subTotal =$Loft_Price;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;
 
    $x_Description = "Loft Bed Rental ( Wittenberg ONLY) - Space-saving comfortable loft bed";
    $x_Amount=$subTaxTotal;
 
}
 
if (isset($_POST['item2'])) {
$subTotal =$MicroFride_Price;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;
 
    $x_Description = "MicroFridge Rental - Compact 2 door fridge and freezer with attached microwave";
    $x_Amount=$subTaxTotal;
        }
 
if (isset($_POST['item3'])) {
$subTotal =$Safe_Rental;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;
    $x_Description = "Electronic Safe Rental - 1.19 cu. ft. Electronic Safe";
    $x_Amount=$subTaxTotal;
}
 
if (isset($_POST['item4'])) {
$subTotal =$Safe_Purchase_Price;
$tax = round($subTotal / 100 * $tax_rate,2);
$subTaxTotal = $subTotal + $tax;
 
    $x_Description = "Electronic Safe Purchase - 1.19 cu. ft. Electronic Safe";
    $x_Amount=$subTaxTotal;
 
}
 
else {
    $x_Description = "error: no items found - didnt capture posted item";
    $x_Amount=$subTaxTotal;
 
}