Php Session Shopping Cart Problem

[nepoverljiv]

I have one code which I use to add articles in shopping cart. In another website working without any kind of problem, but on new one he makes me problem, he add me double article in shopping cart. I press once “add to basket” but he put me twice that articles. When I press “add to basket” I calling this code to found out which articles is:

 

<?php
   session_start();  
   $var=$_SERVER['REQUEST_URI']; //reading
   $id = substr(strrchr($var, "korpa?"),6 );//reading first element after  "?"
   $tbl_name="description"; //table name
   $_SESSION['korpa']+=$row[price];	 
   if($_SESSION['numproduct']==0){
    $_SESSION['articles']=array($id);
    $_SESSION[numproduct]++;
   }else{
    array_push($_SESSION['articles'],$id);
    $_SESSION[numproduct]++;
   }
   redirect("javascript: history.go(-1)");
?>

 

On main page I using this code to see what exist in shopping cart:

 

$i=0;
$tbl_name="description";
$query = count($_SESSION['articles']);
if($query==0){
   echo "Your shopping cart is empty.";
}else{
   echo "In your shopping cart exist:<br/><br/>";
   for($i=0;$i<=$query-1;$i++){
   $br=$i+1;
connect();
   $element=$_SESSION['articles'][$i];
   $sql="SELECT * FROM $tbl_name WHERE id=$element";
   $subject_set=mysql_query($sql);
   $subject=mysql_fetch_array($subject_set);
   echo "   ".$br.". ";
   echo $subject['name'];
   echo " - <b>".$subject['prices']." USD</b><br/>  ";
}
echo "<p align=right><a href=index.php?=order class=basket>Order</a> · <a href=includes/delete.php>Delete items</a></p>";

 

Does anyone knows why articles goes twice in shopping cart?

[nepoverljiv]

I have figured it out that problem is in this line of code:

 

 $sql="SELECT * FROM $tbl_name WHERE id=$element";
   $subject_set=mysql_query($sql);
   $subject=mysql_fetch_array($subject_set); 

 

Everything before is ok, but here give me double values. Please help me

[Christian F.]

What do you mean with "double values"? Show us an example of what you expect to get, and what you are getting.

 

Also have you read the PHP manual page for mysql_fetch_array ()?

[nepoverljiv]

I wanna get in my shopping cart this:

 

1.Name of first articles - Price of first articles

 

After I add one more wanna get this:

 

1.Name of first articles - Price of first articles

2.Name of second articles - Price of second articles

 

But instead that I get this:

 

1.Name of first articles - Price of first articles

2.Name of first articles - Price of first articles

 

After I add one more wanna get this:

 

1.Name of first articles - Price of first articles

2.Name of first articles - Price of first articles

3.Name of second articles - Price of second articles

4.Name of second articles - Price of second articles

 

I am using exactly same code on another website and there working ok, I can't figured it out why happen this on new one sites.

Edited December 22, 2012 by nepoverljiv

[nepoverljiv]

U can see online www.vuna.034.rs.

 

On right side you can see "U korpu" (add to cart) , and you will see what will happen