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I'm currently working on a shopping cart system. It requires a user login to access the cart. So I've wrote some codes to disable access of the cart page if the user is not logged in. However, whenever I try to empty the cart, I get logged out. I just want to destroy the cart session and not the user session. Here's my code:
For the cart page:
<?php
session_start();
if(isset($_SESSION['userID'])){
}
elseif(!isset($_SESSION['userID'])){
echo
"<script>
alert('You must be logged in.');
window.location.href='index.php#login'
</script>";
}
?>
<?php
include ('../import/layout.php');
?>
<body>
<div class="site-wrapper" id="index">
<div class="site-wrapper-inner">
<div class="cover-container">
<?php
include ('../import/nav-two.php');
?>
<!-- <div class="inner cover">
</div>
<div class="mastfoot">
<div class="inner">
<p>© 2015 Aroma Chicken House Restaurant, All Rights Reserved.
<a class="menu-item pull-right" href="#index">Back to Top</a>
</p>
</div>
</div> -->
</div>
<div id="cart">
<div class="container">
<?php
include ('../cart/index.php');
?>
</div>
</div>
</div>
</div>
</body>
For the cart update:
<?php
session_start();
include_once("config/config.php");
//empty cart by distroying current session
if(isset($_GET["emptycart"]) && $_GET["emptycart"]==1)
{
$return_url = base64_decode($_GET["return_url"]); //return url
session_destroy();
header('Location:'.$return_url);
}
//add item in shopping cart
if(isset($_POST["type"]) && $_POST["type"]=='add')
{
$product_code = filter_var($_POST["product_code"], FILTER_SANITIZE_STRING); //product code
$product_qty = filter_var($_POST["product_qty"], FILTER_SANITIZE_NUMBER_INT); //product code
$return_url = base64_decode($_POST["return_url"]); //return url
//MySqli query - get details of item from db using product code
$results = $mysqli->query("SELECT product_name,price FROM products WHERE product_code='$product_code' LIMIT 1");
$obj = $results->fetch_object();
if ($results) { //we have the product info
//prepare array for the session variable
$new_product = array(array('name'=>$obj->product_name, 'code'=>$product_code, 'qty'=>$product_qty, 'price'=>$obj->price));
if(isset($_SESSION["products"])) //if we have the session
{
$found = false; //set found item to false
foreach ($_SESSION["products"] as $cart_itm) //loop through session array
{
if($cart_itm["code"] == $product_code){ //the item exist in array
$product[] = array('name'=>$cart_itm["name"], 'code'=>$cart_itm["code"], 'qty'=>$product_qty, 'price'=>$cart_itm["price"]);
$found = true;
}else{
//item doesn't exist in the list, just retrive old info and prepare array for session var
$product[] = array('name'=>$cart_itm["name"], 'code'=>$cart_itm["code"], 'qty'=>$cart_itm["qty"], 'price'=>$cart_itm["price"]);
}
}
if($found == false) //we didn't find item in array
{
//add new user item in array
$_SESSION["products"] = array_merge($product, $new_product);
}else{
//found user item in array list, and increased the quantity
$_SESSION["products"] = $product;
}
}else{
//create a new session var if does not exist
$_SESSION["products"] = $new_product;
}
}
//redirect back to original page
header('Location:'.$return_url);
}
//remove item from shopping cart
if(isset($_GET["removep"]) && isset($_GET["return_url"]) && isset($_SESSION["products"]))
{
$product_code = $_GET["removep"]; //get the product code to remove
$return_url = base64_decode($_GET["return_url"]); //get return url
foreach ($_SESSION["products"] as $cart_itm) //loop through session array var
{
if($cart_itm["code"]!=$product_code){ //item does,t exist in the list
$product[] = array('name'=>$cart_itm["name"], 'code'=>$cart_itm["code"], 'qty'=>$cart_itm["qty"], 'price'=>$cart_itm["price"]);
}
//create a new product list for cart
$_SESSION["products"] = $product;
}
//redirect back to original page
header('Location:'.$return_url);
}
?>
738
If you want to destroy all the session variables, then use the following PHP function. session_destroy();
It can be done by clicking on the logout button or by destroying that session after a fixed time. By default the expiry time of any particular session that is created is 1440 secs i.e. (24*60) i.e. 24 minutes. But in some cases, we need to change the default time accordingly.
Description ¶session_destroy() destroys all of the data associated with the current session. It does not unset any of the global variables associated with the session, or unset the session cookie. To use the session variables again, session_start() has to be called.
What about
unset($_SESSION["products"])
instead of the
session_destroy()
There is only one session per user. So there is no way to destroy a "specific" session. What you can do is delete the contents of your session responsible for the display of the cart (as shown above).
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