从基本购物车脚本计算小计和总计

Question

Im trying to calculate a subtotal and a total from a series of values stored in an array returned from a mysql database.

this i what i have thusfar

    while($row = mysql_fetch_array($cart)){ 
    foreach($row AS $key => $value) { $row[$key] = stripslashes($value); } 
    $id = $row['id'];
    $contents = unserialize($row['contents']);
        foreach( $contents as $key => $value){
            if($key == "price"){$subtotal = $subtotal+$value;}
            echo "$key : $value <br />";
        }
    echo "<br><br><br>";
    } 
echo "<font color=red>SubTotal $subtotal</font>";

$contents contains an array [name] => super [price] => 65.87 [quantity] => 25

So i need to multiply the price by quantity, and then take that subtotal (per item) and add it in total after the loop

Answer 1

foreach( $contents as $key => $value)
{
   if($key == "price") $total = $total+$value;

   if($key == "name")
   { 
       if(!isset($subtotal[$key])) $subtotal[$key] = 0;
       $subtotal[$key] = $subtotal[$key] + $value;
   }
}

Then you have total price in $total and for each individual item in $subtotal array