Permission denied (13)?

[Anon]

Can anyone help me with this?
I've tried to write something into the session and my browser shows this:

Warning: open(/tmp/sess_12567b495a7e78db5d0071cfd95ada22, O_RDWR) failed: Permission denied (13) in /web/sites...

Thanks,
Rudy

[Anon]

The user your web server is running as (usually nobody, or www) doesn't have permission to write files in the directory /tmp. Or the file /tmp/sess_12567b495a7e78db5d0071cfd95ada22 already exists (doubtful) and the web server doesn't have the permissions to access it.

[Anon]

Thanks for the answer Rob, but when i write:

$SESSION["user"]=$user; // is an array
$SESSION["ip"]=$ip;

to register a user into the session, it works! It shows on my header.php which has code like this:

$user=$SESSION["user"]["UNick"];

But there is an error when i try to write:

$SESSION["shopcart"]->add($ProductID,$qty);

where function add($ProductID,$qty) was in the php class:

class Cart {

var $items;
var $total;
var $totalidr;
...
...
...
function add(&$ProductID, $qty) {
$this->items[$ProductID] += $qty;
}
...
...
...

}

Is there anything i can do to solve the problem?

Thanks...
Rudy

[Anon]

I'm confused by your code, you are trying to call a function from an object, and expect that the object will stay instantiated over a session?

I don't think you can do it that way. I believe that objects are only stored in memory and when the page finishes they disappear.

I'd suggest that you have a method in your Cart class that returns an array of all items currently in the cart, and call that method at the very end of each of your pages that uses it, then register the variable that you put that array into. Then at the beginning of your pages you can call another method that will take that array and populate it back into the Cart properly. If the array doesn't exist in the session then you have an empty "Cart".

If this doesn't make sense it might be because I don't quite understand what you are trying to achieve. It'd be easier if I could see the code.

[Anon]

Actually I'm learning how to use cart.php class from Ying Zang ([e-mail]):

<?
/ cart.php (c) 2000 Ying Zhang ([e-mail])
/

class Cart {
var $items; / array of items /
var $total; / total of the cart /
var $totalidr; / total of the cart in IDR /

function Cart() {
/* object constructor */

	$this->init();
}

function init() {
/* this function is called to initialize (and reset) a shopping cart */

	$this->items = array();
	$this->total = 0;
	$this->totalidr = 0;
}

function add(&$productid, $qty) {
/* add an item to the shopping cart and update the total price */

	if (isset($productid)) {
		$this->items[$productid] += $qty;
	}
}

function set(&$productid, $qty) {
/* set the quantity of a product in the cart to a specified value */

	if (isset($productid)) {
		$this->items[$productid] = (int) $qty;
	}
}

function remove(&$productid) {
/* this function will remove a given product from the cart */

	if (isset($productid)) {
		unset($this->items[$productid]);
	}
}

function cleanup() {
/* this function will clean up the cart, removing items with invalid product
 * id's (non-numeric ones) and products with quantities less than 1 */

	foreach ($this->items as $productid => $qty) {
		if ($qty < 1) {
			unset($this->items[$productid]);
		}
	}
}

function itemcount() {
/* returns the number of individual items in the shopping cart (note, this
 * takes into account the quantities of the items as well) */

	$count = 0;
	foreach ($this->items as $productid => $qty) {
		$count += $qty;
	}

	return $count;
}

function productcount() {
/* returns the number of individual products in the shopping cart */

	$count = 0;
	foreach ($this->items as $productid => $qty) {
		$count += 1;
	}

	return $count;
}

function get_productid_list() {
/* return a comma delimited list of all the products in the cart, this will
 * be used for queries, eg. SELECT id, price FROM products WHERE id IN ....
  */
	$productid_list = "";

	foreach ($this->items as $productid => $qty) {
		$productid_list .= ",'" . $productid . "'";
	}

	/* need to strip off the leading comma */
	return substr($productid_list, 1);
}

function recalc_total() {
/* recalculate the total for the shopping cart, we will also do some cleanup
 * and remove invalid items from the cart.  we have to query the database to
 * get the prices, so instead of making one query for each product in the
 * basket, we will gather up all the ID's we are interested in and run one
 * query to get all the products we care about (using $in_clause) */

	global $db;

	$this->total = 0;
	$this->totalidr = 0;

	$in_clause = $this->get_productid_list();
	if (empty($in_clause)) {
		return;
	}

	$qid = mysql_query("SELECT PrID, PrRPrcUsd, PrRPrcIdr FROM Products WHERE PrID IN ($in_clause)",$db);
	while ($product = mysql_fetch_object($qid)) {
		$this->total += round($this->items[$product->PrID] * $product->PrRPrcUsd,2);
		$this->totalidr += round($this->items[$product->PrID] * $product->PrRPrcIdr,2);
	}
}

}

?>

And to add item in the shopping cart i use this:

<?
/ add_cart.php /

if(!isset($config)){include("config/config.php");} // Configuration file
if(!isset($wmlib)){include("wmlib.php");} // This is my share function

$SESSION["cart"]->add($PrID, 1);

if (! empty($HTTP_REFERER)) {
header("Location: $HTTP_REFERER");
} else {
header("Location: $base_url");
}
?>

I call add_cart.php from a link in every product detail page, sample like: cart_add.php?PrID=1

$SESSION was declared in config.php:

session_start();
session_register("SESSION");
if (!isset($SESSION)) {
$SESSION = array();
}
if (!isset($SESSION["cart"])) {
$SESSION["cart"] = new Cart;
}

That's all the code Rob, thanks for your time to help me.

Regards,
Rudy

[Anon]

I actually fixed the same problem by allowing the Internet Guest Account write access to c:\program files\php\sessiondata\

Silly mistake =P