The example in this article describes the implementation method of php shopping cart. Share it with everyone for your reference. The specific analysis is as follows:
Here we provide you with a simple php shopping cart code, from adding shopping products to making purchases. In mall development, this function is indispensable. We do not need a database and use txt text files to operate user shopping. content.
Add items to the shopping cart with the following code:
The code is as follows:
//
// 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
$curr_product = array();
// Loop through all the products and pull up the product
// that we are interested in
foreach ($master_products_list as $prod_id => $product) {
if (trim($prod_id) == trim($_GET[id])) {
$curr_product = $product;
}
}
// Register our session
//session_register('cart');
//if(session_is_registered('cart')) echo "already registered";
if ($_POST[ordered]) { // If they have chosen the product
array_push($_SESSION[cart][products], array(trim($_POST[id]), $_POST[quantity]));
$_SESSION[cart][num_items] = $_POST[quantity];
}
?>
<br>
<?php if ($_POST[ordered]) { ?> <br>
Already added <?php echo $curr_product[name]; ?> to your shopping cart <br>
<?php } else { ?> <br>
Add <?php echo $curr_product[name]; ?> to your basket <br>
<?php } ?> <br>
Return product list page.
// 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
$curr_product = array();
// Loop through all the products and pull up the product
// that we are interested in
foreach ($master_products_list as $prod_id => $product) {
if (trim($prod_id) == trim($_GET[id])) {
$curr_product = $product;
}
}
// Register our session
//session_register('cart');
//if(session_is_registered('cart')) echo "already registered";
if ($_POST[ordered]) { // If they have chosen the product
array_push($_SESSION[cart][products], array(trim($_POST[id]), $_POST[quantity]));
$_SESSION[cart][num_items] = $_POST[quantity];
}
?>
Added to shopping cart successfully
Return product list page.
Add to your shopping cart
View the items in the shopping cart, the code is as follows:
The code is as follows:
//
// cart.php:
//
session_start();
require 'lib.inc.php';
//Determine whether the shopping basket session variable cart is registered. If not, register the cart variable
if (session_is_registered('cart')) {
session_register('cart');
}
// If the shopping basket has not been initialized, initialize the shopping basket
if (!isset($_SESSION[cart][num_items])) {
$_SESSION[cart] = array("num_items" => 0,
"products" => array());
}
// From site_lib.inc, Loads the $master_products_list array
LoadProducts(); //Load item list
?>
Shopping basket program demonstrating session tracking
if ($_SESSION[cart][num_items]) { // If there is something to show
?>
}
?>
We offer the following items for sale:
// cart.php:
//
session_start();
require 'lib.inc.php';
//Determine whether the shopping basket session variable cart is registered. If not, register the cart variable
if (session_is_registered('cart')) {
session_register('cart');
}
// If the shopping basket has not been initialized, initialize the shopping basket
if (!isset($_SESSION[cart][num_items])) {
$_SESSION[cart] = array("num_items" => 0,
"products" => array());
}
// From site_lib.inc, Loads the $master_products_list array
LoadProducts(); //Load item list
?>
Welcome to the online store
if ($_SESSION[cart][num_items]) { // If there is something to show
?>
Items currently in the shopping basket
| Product name | Product Description | Unit price | Quantity | |
|---|---|---|---|---|
| | | | | |
| Total: | RMB： | |||
}
?>
Items for sale in the store
We offer the following items for sale:
| Product name | Product Description | Unit price | |
|---|---|---|---|
| | | $ | Add to basket |
修改购物车的数量,代码如下:
代码如下:
//
// change_quant.php:
// Change the quantity of an item in the shopping cart.
//
session_start();
if (session_is_registered('cart')) {
session_register('cart');
}
// Typecast to int, making sure we access the
// right element 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 number of items
$_SESSION[cart][num_items] = ($old_num >$_POST[quantity]) ?
$_SESSION[cart][num_items] - ($old_num-$_POST[quantity]) :
$_SESSION[cart][num_items] ($_POST[quantity]-$old_num);
?>
<br>
数量修改 <br>
将数量： 更改为
返回 商品列表页面.
// change_quant.php:
// Change the quantity of an item in the shopping cart.
//
session_start();
if (session_is_registered('cart')) {
session_register('cart');
}
// Typecast to int, making sure we access the
// right element 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 number of items
$_SESSION[cart][num_items] = ($old_num >$_POST[quantity]) ?
$_SESSION[cart][num_items] - ($old_num-$_POST[quantity]) :
$_SESSION[cart][num_items] ($_POST[quantity]-$old_num);
?>
将数量： 更改为
返回 商品列表页面.
功能页面,用户把购物车里面的内容保存到txt数据库,代码如下:
代码如下:
//物品数组
$master_products_list = array();
//载入物品数据函数
function LoadProducts() {
global $master_products_list;
$filename = 'products.txt';
$fp = @fopen($filename, "r")
or die("打开 $filename 文件失败");
@flock($fp, 1)
or die("锁定 $filename 文件失败");
//读取文件内容
while ($line = fgets($fp, 1024)) {
list($id, $name, $desc, $price) = explode('|', $line); //读取每行数据，数据以| 格开
$id = trim($id); //去掉首尾特殊符号
$master_products_list[$id] = array("name" => $name, //名称
"desc" => $desc, //说明
"price" => $price); //单价
}
@fclose($fp) //关闭文件
or die("关闭 $filename 文件失败");
}
?>
很简单,我们只用了4个文件就实现用php 做好购物车功能,好了这只是一款简单的php购物车代码更复杂的需要考虑更多更好.
$master_products_list = array();
//载入物品数据函数
function LoadProducts() {
global $master_products_list;
$filename = 'products.txt';
$fp = @fopen($filename, "r")
or die("打开 $filename 文件失败");
@flock($fp, 1)
or die("锁定 $filename 文件失败");
//读取文件内容
while ($line = fgets($fp, 1024)) {
list($id, $name, $desc, $price) = explode('|', $line); //读取每行数据，数据以| 格开
$id = trim($id); //去掉首尾特殊符号
$master_products_list[$id] = array("name" => $name, //名称
"desc" => $desc, //说明
"price" => $price); //单价
}
@fclose($fp) //关闭文件
or die("关闭 $filename 文件失败");
}
?>
很简单,我们只用了4个文件就实现用php 做好购物车功能,好了这只是一款简单的php购物车代码更复杂的需要考虑更多更好.
希望本文所述对大家的php程序设计有所帮助。
