[Resolved] Stuck with shopping cart

[jackiw]

I'm trying to develop a simple shopping cart but I got really stuck at this point. I'm having three main problems which are:

• Don't know how to get the total price
• It doesn't remove items
• If the product already exists in the session, it "overwrites" the information with the new one instead of adding it as a new item

Here's my code:

//Adding the item to the cart

if($ADDITEM) {
	$_SESSION['cart'][$ADDITEM] = "$quantity|$size|$color|$style|$price|$name|$ADDITEM";
}

$ADDITEM is the product id


//Deleting the item

if($DELITEM) {
	foreach ($_POST['checkdel'] as $ITM) {
	unset($_SESSION['cart'][$ITM]);

}
}


// Listing the cart's content

print "<form name=form1 method=post action=basket.php>
<input type=hidden name='DELITEM' value='1'>
<table width=100% border=1>";

foreach ($_SESSION['cart'] as $products)
{
 $items = explode("|", $products);
 $item_qty = $items[0];
 $item_size = $items[1];
 $item_color = $items[2];
 $item_style = $items[3];
 $item_price = $items[4];
 $item_name = $items[5];
 $item_id = $items[6];

 print "<tr>
 <td><input type=checkbox name='checkdel' value='$item_id'></td>
 <td>$item_qty</td>
 <td>$item_size</td>
 <td>$item_color</td>
 <td>$item_style</td>
 <td>$item_price</td>
 <td>$item_name</td>
 </tr>";
}

print "<BR><BR><input type='submit' name='submit' value='Remove Selected Items'&
B25
gt;</table></form>"

Any help would be really appreciated

[devinemke]

first of all, i suggest you store the cart items in an array rather than a "|" deleimited list. i'm going to assume this would be run after a POST form is submitted that included the product_id and the quantity:

if (isset($_POST['submit']) && $_POST['submit'] == 'Add Items')
{
	extract($_POST);

if (isset($_SESSION['cart'][$product_id])) // if the item already exists, add to the quantity
{
	$_SESSION['cart'][$product_id]['quantity'] += $quantity;
}
else
{
	$_SESSION['cart'][$product_id] = array(
		'quantity' => $quantity,
		'size' => $size,
		'color' => $color,
		'style' => $style,
		'price' => $price,
		'name' => $name
	);
}
}

for listing the cart's content with total price (note that i have setup the "items to be removed" as an array):

echo '
<form action="basket.php" method="POST" name="form1">
<table width=100% border=1>
<tr>
	<td>remove?</td>
	<td>quantity</td> 
	<td>size</td> 
	<td>color</td> 
	<td>style</td> 
	<td>price</td> 
	<td>name</td>
	<td>subtotal</td>
</tr>
'; 

$total = 0;

foreach ($_SESSION['cart'] as $key => $value)
{ 
	extract($value);

$subtotal = $quantity * $price;
$total += $subtotal;

echo '
<tr> 
<td><input type="checkbox" name="checkdel[]" value="' . $key . '"></td> 
<td>' . $quantity . '</td> 
<td>' . $size . '</td> 
<td>' . $color . '</td> 
<td>' . $style . '</td> 
<td>$' . $price . '</td> 
<td>' . $name . '</td>
<td>$' . $subtotal . '</td> 
</tr>
';
}

echo '
</table>
<input type="submit" name="submit" value="Remove Selected Items">
</form>
total = $' . $total;

for deleting items:

if (isset($_POST['submit']) && $_POST['submit'] == 'Remove Selected Items')
{
	foreach ($_POST['checkdel'] as $value)
	{
		unset($_SESSION['cart'][$value]);
	}
} 

please note that none of this tested, just a basic example.

[jackiw]

Thank you so much for the help. I'll try it.

[jackiw]

If someone wants to use the shopping cart script above, just make sure that, if your products have different sizes, colors, styles, etc, make sure you change

if (isset($_POST['submit']) && $_POST['submit'] == 'Add Items') 
{ 
    extract($_POST); 

if (isset($_SESSION['cart'][$product_id])) // if the item already exists, add to the quantity 
{ 
    $_SESSION['cart'][$product_id]['quantity'] += $quantity; 
} 
else 
{ 
    $_SESSION['cart'][$product_id] = array( 
        'quantity' => $quantity, 
        'size' => $size, 
        'color' => $color, 
        'style' => $style, 
        'price' => $price, 
        'name' => $name 
    ); 
} 
}

to

if (isset($_POST['submit']) && $_POST['submit'] == 'Add Items') 
{ 
    extract($_POST); 

$PROD = "$product_id$size$color$style";

if (isset($_SESSION['cart'][$PROD])) // if the item already exists, add to the quantity 
{ 
    $_SESSION['cart'][$PROD]['quantity'] += $quantity; 
} 
else 
{ 
    $_SESSION['cart'][$PROD] = array( 
        'quantity' => $quantity, 
        'size' => $size, 
        'color' => $color, 
        'style' => $style, 
        'price' => $price, 
        'name' => $name 
    ); 
} 
}

Otherwise it would be just adding the quantity to the item you choose, ignoring the size, color, style, etc...