Mini Shopping baskets implemented with PHP4 session only (II)

Session Fragment 3. Create a new basket and add a project to it

<?php

Set Item count to 1
$ses _basket_items=1;

Fills the No. 0 position of the 4 array, using the values passed from the href link.
The link is in the ' Add links to your page ' section
$ses _basket_name[0]= $basket;
$ses _basket_amount[0]=1;
$ses _basket_price[0]= $price;
$ses _basket_id[0]= $id;

Register a new basket in session
Session_register ("Ses_basket_items");
Session_register ("Ses_basket_name");
Session_register ("Ses_basket_amount");
Session_register ("Ses_basket_price");
Session_register ("ses_basket_id");

?>

This creates a basket, fills the value in the No. 0 position of the array, and registers the array with the session. A basket was born.


Fragment 4. Fill Basket

<?php

$basket _position_counter=0; The position in the basket
$double = 0; Double entry flag set to No
if ($ses _basket_items>0) {
Check if the basket contains a double entry in the item
foreach ($ses _basket_name as $basket _item) {
Iterate through the names contained in the array to check if the match came from the href
if ($basket _item== $basket) {
If you already have a project in the basket, set the flag to 1.
$double = 1;
Remember the location of the project and update it
$basket _position= $basket _position_counter;
}
$basket _position_counter++; Increase the actual position in the basket
}
}

Update Basket
if ($double ==1) {
Update the number and location of $basket_position processing if the item already exists in your basket
$oldamount = $ses _basket_amount[$basket _position];
$ses _basket_amount[$basket _position]++;
$amount = $ses _basket_amount[$basket _position];
$oldprice = $ses _basket_price[$basket _position];
Update Price
$newprice = ($oldprice/$oldamount) * $AMOUNT;
$ses _basket_price[$basket _position]= $newprice;
}else{
If it's not in your basket, add a new item at the end of the array
$ses _basket_name[]= $basket;
$ses _basket_amount[]=1;
$ses _basket_price[]= $price;
$ses _basket_id[]= $id;
$ses _basket_items++;
}

?>

Great, now you can fill in the mini shopping basket and show it.

To organize snippets of code together

Let's organize the code together and save it as a minibasket.inc.

<?php

Remember, in code fragment 1, is the decision to be increased?
Let's repeat it here
if ($basket!= "") {
Here, the project will be added to the basket. Let's check if there is a registered basket.
if (session_is_registered ("Ses_basket_items")) {
There is a registered basket, put the code fragment 4 here.
It adds items to the registered basket, checks for duplicate records, updates them or adds items at the end of the array
} else {
There is no registered basket, put the code fragment 3 here. It creates a new basket, and
Register it by session.
}
}
All that's left is code fragment 2. If there are items in the basket, use them to display them.
Add to this.

?>

Look, it's good. "C ' est tout," the Frenchman would say. If all is done, you can save this file for Minibasket.inc
and include it in the PHP page that displays the product.

Minibasket.inc and basket.php in zip format