Problema con sesiones =(

Art
14 de Junio del 2004
Que tal estoy haciendo un carrito de compras sencillo pero tengo un problema con las sesiones no se porque me manda este error

Warning: session_start(): open(C:PHPsessiondatasess_107d25996ee45bdac0dfb 5667a9fbf7a, O_RDWR) failed: No such file or directory (2) in c:appservwwwcarritodb.php on line 43

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at c:appservwwwcarritocart.php:5) in c:appservwwwcarritodb.php on line 43

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at c:appservwwwcarritocart.php:5) in c:appservwwwcarritodb.php on line 43

Warning: Cannot modify header information - headers already sent by (output started at c:appservwwwcarritocart.php:5) in c:appservwwwcarritodb.php on line 44

Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result resource in c:appservwwwcarritocart.php on line 47

Notice: A session had already been started - ignoring session_start() in c:appservwwwcarritodb.php on line 43

Warning: Cannot modify header information - headers already sent by (output started at c:appservwwwcarritocart.php:5) in c:appservwwwcarritodb.php on line 44


mi codigo es este
<html>
<head>


<?php

include("db.php");

switch($_GET["action"])
{
case "add_item":
{
AddItem($_GET["id"], $_GET["qty"]);

ShowCart();
break;
}
case "update_item":
{
UpdateItem($_GET["id"], $_GET["qty"]);
ShowCart();
break;
}
case "remove_item":
{
RemoveItem($_GET["id"]);
ShowCart();
break;
}
default:
{
ShowCart();
}
}

//-----------------31----------------------------------

function AddItem($itemId, $qty)
{
global $dbServer, $dbUser, $dbPass, $dbName;

// Get a connection to the database
$cxn = @ConnectToDb($dbServer, $dbUser, $dbPass, $dbName);

// Check if this item already exists in the users cart table
$result = mysql_query("select count(*) from cart where cookieId = '" . GetCartId() . "' and itemId = $itemId");
$row = mysql_fetch_row($result);
$numRows = $row[0];

if($numRows == 0)
{
// This item doesn't exist in the users cart,
// we will add it with an insert query

@mysql_query("insert into cart(cookieId, itemId, qty) values('" . GetCartId() . "', $itemId, $qty)");

}
else
{
// This item already exists in the users cart,
// we will update it instead

UpdateItem($itemId, $qty);

}
}
//--------------------62-------------------------------

function UpdateItem($itemId, $qty)
{
// Updates the quantity of an item in the users cart.
// If the qutnaity is zero, then RemoveItem will be
// called instead

global $dbServer, $dbUser, $dbPass, $dbName;

// Get a connection to the database
$cxn = @ConnectToDb($dbServer, $dbUser, $dbPass, $dbName);

if($qty == 0)
{
// Remove the item from the users cart
RemoveItem($itemId);
}
else
{
mysql_query("update cart set qty = $qty where cookieId = '" . GetCartId() . "' and itemId = $itemId");
}
}

//-------------------86--------------------------------

function RemoveItem($itemId)
{
// Uses an SQL delete statement to remove an item from
// the users cart

global $dbServer, $dbUser, $dbPass, $dbName;

// Get a connection to the database

$cxn = @ConnectToDb($dbServer, $dbUser, $dbPass, $dbName);

mysql_query("delete from cart where cookieId = '" . GetCartId() . "' and itemId = $itemId");

}

function ShowCart()
{
// Gets each item from the cart table and display them in
// a tabulated format, as well as a final total for the cart

global $dbServer, $dbUser, $dbPass, $dbName;

// Get a connection to the database
$cxn = @ConnectToDb($dbServer, $dbUser, $dbPass, $dbName);

$totalCost = 0;
$result = mysql_query("select * from cart inner join items on cart.itemId = items.itemId where cart.cookieId = '" . GetCartId() . "' order by items.itemName asc");
?>
//----------------116--------------------------------------------

<script language="JavaScript">

function UpdateQty(item)
{
itemId = item.name;
newQty = item.options[item.selectedIndex].text;

document.location.href = 'cart.php?action=update_item&amp;id='+itemId+'&amp;qty='+newQty;
}

</script>
</head>

<body bgcolor=white lang=EN-GB link=blue vlink=blue style='tab-interval:36.0pt'>

<div class=Section1>
<h1>Your Shopping </h1>

<form name="frmCart" method="get">

<table width="100%" cellspacing="0" cellpadding="0" border="0">
<tr>
<td width="15%" height="25" bgcolor="red">
<font face="verdana" size="1" color="white">
&nbsp;&nbsp;<b>Qty</b>
</font>
</td>
<td width="15%" height="25" bgcolor="red">
<font face="verdana" size="1" color="white">
<b>Product</b>
</font>
</td>
<td width="15%" height="25" bgcolor="red">
<font face="verdana" size="1" color="white">
<b>Price Each</b>
</font>
</td>
<td width="15%" height="25" bgcolor="red">
<font face="verdana" size="1" color="white">
<b>Remove ?</b>
</font>
</td>
</tr>


<?php

while($row = mysql_fetch_array($result))
{
// Increment the total cost of all items
$totalCost += ($row["qty"] * $row["itemPrice"]);
?>
<tr>
<td width="15%" height="25">
<font face="verdana" size="1" color="black">

<select name="<?php echo $row["itemId"]; ?>" onChange="UpdateQty(this)">
<?php
for($i = 1; $i <= 20; $i++)
{
echo "<option ";
if($row["qty"] == $i)
{
echo " SELECTED ";
}
echo ">" . $i . "</option>";
}
?>
</select>
</font>
</td>
<td width="55%" height="25">
<font face="verdana" size="1" color="black">
<?php echo $row["itemName"]; ?>
</font>
</td>
<td width="20%" height="25">
<font face="verdana" size="1" color="black">
$<?php echo number_format($row["itemPrice"], 2, ".", ","); ?>
</font>
</td>
<td width="10%" height="25">
<font face="verdana" size="1" color="black">
<a href="cart.php?action=remove_item&id=<?php echo $row["itemId"]; ?>">Remove</a>
</font>
</td>
</tr>
<?php
}

// Display the total
?>
<tr>
<td width="100%" colspan="4">
<hr size="1" color="red" NOSHADE>
</td>
</tr>
<tr>
<td width="70%" colspan="2">
<font face="verdana" size="1" color="black">
<a href="products.php">&lt;&lt; Keep Shopping</a>
</font>
</td>
<td width="30%" colspan="2">
<font face="verdana" size="2" color="black">
<b>Total: $<?php echo number_format($totalCost, 2, ".", ","); ?></b>
</font>
</td>
</tr>
</table>
</form>
</body>
</html>
<?php
}
?>

alguien me puede ayudar

roo
14 de Junio del 2004
verifica que
C:PHPsessiondata
exista en tu disco duro, sino, creala

http://myphp.webcindario.com

Art
14 de Junio del 2004
gracias por contestar

si tengo el archivo de sesion que dices pero esta en esta ruta

C:AppServphpsession
no sabia que aqui se recibe las sessiones

esto para que sirve disculpa mi ignorancia esto es la primera ves que lo hago y estoy muy interesado en generar un catalogo de compras

te agradesco de antemando por tu respuesta

saludos