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PHP - Can Someone Help Please - Need The Sum Of All Quantities

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Can Someone Help Please - Need The Sum Of All Quantities	View Content

can someone help please...
this php is to calculate shipping charges for paypal..
RULES: ($7.00 FOR THE FIRST TWO ITEMS - $1.00 FOR EACH ADDITIONAL ITEM)
as is, the formula calculates the number of items - not total of quantity - adds $1 for each additional after 2.
any suggestions would be appreciated..

link to form: http://crsecrets.com/test01/order.html

FORM LIST ITEMS FORMAT - HTML
<TD>Herbal Hair Rejuvenator, Unscented <FONT SIZE="-2">(4oz. jar)</FONT><input type="hidden" name="item_name_1" value="Herbal Hair Rejuvenator, Unscented (4oz. jar)" /> </TD>
<TD align="center" id="table"><input name="quantity_1" type="text" value="" size="6" maxlength="2" /></TD>
<TD align="center">$13.50<input type="hidden" name="amount_1" value="13.50" /></TD>

<?php
$products = array();
$url = "?business=*********$handling_cart=7.00";

foreach ($_POST as $k=>$v) {
preg_match("/\_(\d{1,3})$/",$k,$match);
$key = $match[1];
$products[$key][$k] = $v;
}

$i=1;
foreach ($products as $k=>$v) {
if ($v['quantity_'.$k] > 0) {
foreach ($v as $k1=>$v1) {
$key = explode("_",$k1);
switch($key[0]) {
case 'item':
$var = "item_name_" . $i;
break;
case 'quantity':
$var = "quantity_" . $i;
break;
case 'amount':
$var = "amount_" . $i;
break;
}

//get shipping for additional items above 3
if ($i <= 2) {
$shipping = "0.00";
} else {
$shipping = "1.00";
}
$shipping = ($shipping * $v['quantity_' . $k]);

$url .= "&" . $var . "=" . urlencode($v1);
}
$url .= "&shipping_" . $i . "=" . $shipping;
$i++;
}
}
#echo $url;
header("Location: https://www.paypal.com/cgi-bin/webscr" . $url);
exit;
?>

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Working With Quantities

New To Php - Nee Sum Of Total Quantities For Shipping..

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the PHP below counts the number of items but not the total quantity (quantity_1) to calculate the value of $shipping. any ideas?

link to form: http://crsecrets.com/test01/order.html

FORM
Code: [Select]
<TD>Herbal Hair Rejuvenator, Unscented <FONT SIZE="-2">(4oz. jar)</FONT><input type="hidden" name="item_name_1" value="Herbal Hair Rejuvenator, Unscented (4oz. jar)" /> </TD>
<TD align="center" id="table"><input name="quantity_1" type="text" value="" size="6" maxlength="2" /></TD>
<TD align="center">$13.50<input type="hidden" name="amount_1" value="13.50" /></TD>

Code: [Select]
[m]<?php
   $products = array();
   $url = "?business=*********$handling_cart=7.00";

   foreach ($_POST as $k=>$v) {
      preg_match("/\_(\d{1,3})$/",$k,$match);
      $key = $match[1];
      $products[$key][$k] = $v;
   }

   $i=1;
   foreach ($products as $k=>$v) {
      if ($v['quantity_'.$k] > 0) {
         foreach ($v as $k1=>$v1) {
            $key = explode("_",$k1);
            switch($key[0]) {
               case 'item':
                  $var = "item_name_" . $i;
                  break;
               case 'quantity':
                  $var = "quantity_" . $i;
                  break;
               case 'amount':
                  $var = "amount_" . $i;
                  break;
            }

            //get shipping for additional items above 3
            if ($i <= 2) {
               $shipping = "0.00";
            } else {
               $shipping = "1.00";
            }
            $shipping = ($shipping * $v['quantity_' . $k]);

            $url .= "&" . $var . "=" . urlencode($v1);
         }
         $url .= "&shipping_" . $i . "=" . $shipping;
         $i++;
      }
   }
   #echo $url;
   header("Location: https://www.paypal.com/cgi-bin/webscr" . $url);
   exit;
?>[/m]

Update Shopping Cart By Adding Quantities Together If The Same Product Is Chosen

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This is the code that I'm using for a shopping cart in order to update the quantity if the same product id is chosen.

$cart_items is a two-dimensional session array composed of the id session array and the quantity session array. While looping through $cart_items, I create a temporary array $temp_array so that I can execute some logic on the array without changing the normal output. $temp_array is the $cart_items array without the last items which would be the $_REQUEST id and the $_REQUEST quantity. So the two $_REQUESTs are popped off with array_pop and then the remaining $_SESSIONs are compared to the $_REQUEST id with

$j = array_search($_REQUEST["element_id_$i"], $temp_array);
$j is now the key that corresponds to the id in $temp_array where the $_REQUEST id has been found.

if( $j==$temp_array[$i])

If $j is the key of the item in $temp_array, then the $_REQUEST is unset and the quantities for the item are added together.

There are two problems with this code. First of all the var_dump of the $temp_array is always an empty array but I am expecting to get an array with just the last element popped off. Secondly,
I get the error "Undefined offset" for the $i variable in this line of the code: if( $j==$temp_array[$i])

foreach($cart_items as $item) {
foreach($item["id"] as $key => $val) {
foreach($item["quantity"] as $i => $value) {
    if ($key == $i){
    
$temp_array = $cart_items;
$array = array_pop($temp_array);
var_dump($temp_array);

if (isset($_REQUEST["element_id_$i"]) && isset($_REQUEST["quantity_$i"])&& isset($value)){
    
$j = array_search($_REQUEST["element_id_$i"], $temp_array);
if( $j==$temp_array[$i]) {
echo "<b>SAME PRODUCT ADDED</b>";
$value += $_REQUEST["quantity_$i"];
unset($_REQUEST["element_id_$i"]);
}}}}}}