Counting

[Snatch]

Good evening gents! I'm using the following code to count the number of products a user has in their basket. As it is, it works but only counts each new product added to the basket. It doesn't recognise if a user changes the quantity of a product. Eg.

 

You have 2 products in your basket

1 x Mars

1 x Mars

 

You have 1 product in your basket

2 x Mars

 

Basket.php

You currently have

<?php
$sessid = session_id();

//display number of products in cart
     $query = "SELECT * from baskettemp WHERE sess = '$sessid'";
     $results = mysql_query($query)
          or die (mysql_query());
     $rows = mysql_num_rows($results);
     if ( $rows < "1" ) {
 echo "no products in your basket";
 } elseif( $rows == "1") {
 echo "$rows product in your basket";
 } else { 
 echo "$rows products in your basket"; 
 }
?>

 

Baskettemp db contains the fields: hidden sess prodnum and quan.

 

I tried creating a new variable called $amountrows = $rows + quan; but this doesn't work. Any thoughts/suggestions?? Thanks

[mdnghtblue]

What does your UPDATE query look like?

[Snatch]

add.php for adding a product to the basket

 

<?php
session_id();
session_start();
include "connection.php";

$qty =$_POST['qty'];
$prodnum = $_POST['prodnum'];
$sess =session_id();

$query = "INSERT INTO baskettemp (sess, quan, prodnum)
          VALUES ('$sess','$qty','$prodnum')";
$results = mysql_query($query)
     or die(mysql_error());

include("basket.php");
?>

 

change.php for changing the quantity of a product in the basket

 

<?php
session_id();
session_start();
include "connection.php";
$qty =$_POST['qty'];
$hidden = $_POST['hidden'];
$sess = $_POST['sessid'];

$query = "UPDATE baskettemp
     SET quan = '$qty'
     WHERE hidden = '$hidden'";
$results = mysql_query($query)
     or die(mysql_error());
include("basket.php");
?>

[Snatch]

Sorry to bump this but, just wondering if any one has any thoughts before I turn in for the night?

[lemmin]

Since the quantity modifies the total number you need to use that field when calculating it. You are only finding the total number of unique products. Maybe you should do something like:

$query = "SELECT SUM(quan) as total from baskettemp WHERE sess = '$sessid'";
$row = mysql_fetch_array($query);
echo "You have " . $row['total'] . " products in your basket.";

[MadTechie]

have you tried

 

$query = "SELECT *, sum(quan) as Qty from baskettemp WHERE sess = '$sessid'";

 

 

EDIT: lemmin is a more complete reply!

[Snatch]

I've tried playing around with those ideas but now get this error message - Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in C:\xampp\htdocs\website\basket.php on line 158

You have products in your basket.

 

Any more suggestions?

 

 

<?php
$sessid = session_id();

//display number of products in cart
     $query = "SELECT SUM (quan) as total from baskettemp WHERE sess = '$sessid'";
 $rowx = mysql_fetch_array($query);
 echo "You have " . $rowx['total'] . "products in your basket.";
?>

<br /><br />

<table border="1" align="center" cellpadding="5">
      <tr>
           <td>Quantity</td>
	   <td>Type</td>
           <td>Name</td>
           <td>Price Each</td>
           <td>Extended Price</td>
           <td></td>
      <tr>
      <?php
  $query = "SELECT * from baskettemp WHERE sess = '$sessid'";
     $results = mysql_query($query)
          or die (mysql_query());
           while ($row = mysql_fetch_array($results)) {
               extract ($row);
               $prod = "SELECT * FROM products WHERE id =
               '$prodnum'";
               $prod2 = mysql_query($prod);
               $prod3 = mysql_fetch_array($prod2);
               extract ($prod3);
               echo "<td><form method = 'POST' action='change.php'>
                    <input type='hidden' name='prodnum'
                        value='$prodnum'>
                    <input type='hidden' name='sessid'
                        value='$sessid'>
                    <input type='hidden' name='hidden'
                        value='$hidden'>
                    <input type='text' name='qty' size='2'
                        value='$quan'>";
               echo "</td>";
               echo "<td>";
		   echo $type;
		   echo "</td>"; 
               echo "<td>";
               echo $name;
               echo "</td></a>";
               echo "<td align='right'>";
               echo $price;
               echo "</td>";
               echo "<td align='right'>";
          //get extended price
                $extprice = $price * $quan;
               echo number_format($extprice, 2);
               echo "</td>";
               echo "<td>";
               echo "<input type='submit' name='Submit'
                         value='Change Qty'>
                      </form></td>";
               echo "<td>";
               echo "<form method = 'POST' action='delete.php'>
                    <input type='hidden' name='prodnum'
                           value='$prodnum'>
                    <input type='hidden' name='qty' value='$quan'>
                    <input type='hidden' name='hidden'
                           value='$hidden'>
                    <input type='hidden' name='sessid'
                           value='$sessid'>";
               echo "<input type='submit' name='Submit'
                           value='Delete Item'>
                      </form></td>";
               echo "</tr>";
          //add extended price to total
               $total = $extprice + $total;

               }
?>

[lemmin]

Change:

$query = "SELECT SUM (quan) as total from baskettemp WHERE sess = '$sessid'";

 

to:

$query = mysql_query("SELECT SUM (quan) as total from baskettemp WHERE sess = '$sessid'");