以前有用过一个感觉不错,不过看了这个感觉也很好,所以介绍给需要的朋友参考一下,实例代码如下:
- <?php
-
- require_once 'cart.class.php';
- session_start();
- if(!isset($_SESSION['cart'])) {
- $_SESSION['cart'] = new Cart;
- }
- $cart =& $_SESSION['cart'];
-
- if( ($_SERVER['REQUEST_METHOD']=="POST")&&($_POST['action']=='add') ){
- $p = $_POST['p'];
- $items = $cart->add($p);
- }
- if( ($_GET['action']=='remove')&&($_GET['key']!="") ) {
- $items = $cart->remove($_GET['key']);
- }
-
- if( ($_SERVER['REQUEST_METHOD']=="POST")&&($_POST['action']=='modi') ){
- $key = $_POST['key'];
- $value = $_POST['value'];
- for($i=0;$i<count($key);$i ){
- $items = $cart->modi($key[$i],$value[$i]);
- }
- }
-
- $items = $cart->getCart();
-
- echo "<table border=1>";
- setlocale(LC_MONETARY, 'it_IT');
- foreach($items as $item){
- echo "<tr><form method="post" action="tmp.php">";
- echo "<td>ID:".$item['ID']."<input type=hidden name=key[] value=".$item['ID'].">";
- echo "<td>产品:".$item['name'];
- echo "<td>单价:".$item['price'];
- echo "<td><input type=text name=value[] value=".$item['count'].">";
- $sum = $item['count']*$item['price'];
- echo "<td>合计:".round($sum,2);
- echo "<td><input type=button value='删除' onclick="location='?action=remove&key=".$item['ID']."'">";
- }
- echo "<input type=hidden name=action value=modi>";
- echo "<tr><td colspan=7><input type=submit />";
- echo "</td></form></tr></table>";
-
-
- ?>
- <hr>
- <form method="post" action="tmp.php">
- ID:<input type="text" name="p[]" />
- 品名:<input type="text" name="p[]" />
- 单价:<input type="text" name="p[]" />
- 数量:<input type="text" name="p[]" />
- <input type=hidden name=action value=add>
- <input type="submit" />
- </form>
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- <?
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- Class Cart{
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- var $cart;
- var $totalCount;
- var $totalPrices;
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- function Cart(){
- $this->totalCount = 0;
- $this->totalPrice = 0;
- $this->cart = array();
- }
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- function add($item){
- if(!is_array($item)||is_null($item)) return $this->cart;
- if(!is_numeric(end($item))||(!is_numeric(prev($item)))) {
- echo "价格和数量必须是数字";
- return $this->cart;
- }
- reset($item);
- $key = current($item);
- if($key=="") return $this->cart;
- if($this->_isExists($key)){
- $this->cart[$key]['count'] = end($item);
- return $this->cart;
- }
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- $this->cart[$key]['ID'] = $key;
- $this->cart[$key]['name'] = next($item);
- $this->cart[$key]['price'] = next($item);
- $this->cart[$key]['count'] = next($item);
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- return $this->cart;
- }
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- function remove($key="",$count=""){
- if($key=="") {
- $this->cart = array();
- return true;
- }
- if(!array_key_exists($key,$this->cart)) return false;
- if($count==""){
- unset($this->cart[$key]);
- }else{
- $this->cart[$key]['count'] -= $count;
- if($this->cart[$key]['count']<=0) unset($this->cart[$key]);
- }
- return $this->cart;
- }
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- function modi($key,$value){
- if(!$this->_isExists($key)) return $this->cart();
- if($value<=0){
- unset($this->cart[$key]);
- return $this->cart;
- }
- $this->cart[$key]['count'] = $value;
- return $this->cart;
- }
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- function getCart(){
- return $this->cart;
- }
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- function _isExists($key)
- {
- if(isset($this->cart[$key])&&!emptyempty($this->cart[$key])&&array_key_exists($key,$this->cart))
- return true;
- return false;
- }
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- function isEmpty(){
- return !count($this->cart);
- }
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- function _stat(){
- if($this->isEmpty()) return false;
- foreach($this->cart as $item){
- $this->totalCount = @end($item);
- $this->totalPrices = @prev($item);
- }
- return true;
- }
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- function totalPrices(){
- if($this->_stat())
- return $this->totalPrices;
- return 0;
- }
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- function totalCount(){
- if($this->_stat())
- return $this->totalCount;
- return 0;
- }
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- }
- ?>
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