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This article provides a detailed analysis of the function of the PHP shopping cart module. For more information, see
1. shopping cart overviewA shopping cart is a place for consumers to temporarily store items during online
number of books in the inventory is 10, then Customer A puts 10 books in its own shopping cart, and customer B also puts 10 books in its own shopping cart, so who will purchase this book will become a conflict ). However, the result is that every time the customer updates the shop
product information to be displayed in Requestrequest.setattribute ("Booklist", Mycart.showmycart ());// Jump back to ShowMyCart.jsprequest.getRequestDispatcher ("/web-inf/showmycart.jsp"). Forward (request, response);} else if (type.equals ("add")) {//Receive idstring Id=request.getparameter ("id") of the product that the user wants to purchase; SYSTEM.OUT.PRINTLN (ID);//When the shopping Cart object is c
:
//// Add_item.php:// Add an item to the shopping cart.//Session_start ();If (session_is_registered ('cart ')){Session_register ('cart ');}Require 'Lib. inc. php'; // LoadProducts ()LoadProducts (); // Load products in $ master_products_list// Make $ curr_product global$ Curr_product = array ();// Loop through all t
One, Shopping cart overviewA shopping cart is a place where consumers provide a temporary store of goods for online shopping. Its main features include: adding items, deleting items, changing the number of items, subtotal items, total amount of merchandise and emptying the
Web page will asynchronously request the server via Ajax, and then display the message as a modal box (success or failure) based on the data returned by the server. In order to satisfy this function, we need to modify the index.jsp code, the previous code save for index-before.jsp.
In addition to adding a modal box, the modification of the button is very important. The button is saved by data in the corresponding book ISBN.
The following is the c
(isCartEmpty () {myCart, is constructed. emptyCart ();} // if the item is not in the shopping cart, insert the item and calculate the total amount if (! IsItemExist (item, myCart) {// Obtain the root Element of myCart and add the copied item node to the following Element cartRoot = myCart. getDocumentElement (); Node cartNode = cartRoot. appendChild (cloneItem); computeTotal (); // calculates the total amo
Shopping cart is an indispensable part of e-commerce websites. However, currently, most shopping cart can only be used as a display of the items selected by a customer, the client cannot extract the content in the shopping cart to
One, Shopping cart overview Shopping cart is a place for consumers to provide a temporary store of merchandise on the Internet. Its main functions include: adding goods, deleting goods, changing the quantity of goods, subtotal merchandise, total amount of goods and emptying the
= Array ();
Loop through all of the products and pulling up the product
That we is interested in
foreach ($master _products_list as $prod _id = $product) {
if (Trim ($prod _id) = = Trim ($_get[id])) {
$curr _product = $product;
}
}
Register our session
Session_register (' cart ');
if (session_is_registered (' cart ')) echo "already registered";
if ($_post[ordered]) {//If they have chosen the product
A
Php implements the shopping cart function (taking the big apple shopping network as an example ).
First, there are several simple login pages
After logging on to the page, you need to go to the processing page and call up the user name and password from the database:
The l
up the product// That we are interested in
Foreach ($ master_products_list as $ prod_id => $ product ){If (trim ($ prod_id) = trim ($ _ GET [id]) {$ Curr_product = $ product;}}
// Register our session// Session_register ('cart ');// If (session_is_registered ('cart') echo "registered ";
If ($ _ POST [ordered]) {// If they have chosen the product
Array_push ($ _ SESSION [
things. The incident really affected amazon.cn's credibility and wondered if their system had solved the problem, but now the Joyo price for a "deep understanding of the operating system" has changed. Do not know how the master is how to solve this problem, you are welcome to write their own successful experience in the comments.
Reply: First of all, the burden of the database server, think about how many visits to the database per page to visit, and
The first is a few simple landing pagesAfter the login page is written, you need to go to the processing page and bring up the user name and password from the database:This shows the login pageBelow to go to the main page, from the database to get all the fruit information, and then we can add to the shopping
xml| Shopping Cart
Shopping cart is an indispensable part of E-commerce site, but at present, most shopping carts can only be displayed as a customer selected goods, the client can not extract the contents of the cart to meet the
below$ I = (int) $ _ POST [id]; // Save the old number of products for display// And arithmetic$ Old_num = $ _ SESSION [cart] [products] [$ I] [1]; If ($ _ POST [quantity]) {$ _ SESSION [cart] [products] [$ I] [1] =$ _ POST [quantity]; // change the quantity} Else {Unset ($ _ SESSION [cart] [products] [$ I]); // Send the product into oblivion} // Update the numb
Shopping cart is an indispensable part of E-commerce site, but at present, most shopping carts can only be displayed as a customer selected goods, the client can not extract the contents of the cart to meet the needs of their own transaction processing, and this is necessary in some e-commerce activities. The advent of
page, and place advertisements in a targeted manner. The cookie feature greatly extends Web applications.ProgramYou can not only establish the connection between the server and the client, because the cookie can be customized by the server, so you can also store the cookie value generated by the shopping information on the client to implement the shopping
below$ I = (int) $ _ POST [id]; // Save the old number of products for display// And arithmetic$ Old_num = $ _ SESSION [cart] [products] [$ I] [1]; If ($ _ POST [quantity]) {$ _ SESSION [cart] [products] [$ I] [1] =$ _ POST [quantity]; // change the quantity} Else {Unset ($ _ SESSION [cart] [products] [$ I]); // Send the product into oblivion} // Update the numb
In the previous section we finished the detailed page of the product and used the hibernate level two cache load Detail page to improve the performance of the system, click the article to view:. In this section we start doing the shopping cart section.
1. Add a new tableFirst we add a few tables to the database: the u
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