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实用的php购物车程序

Jun 13, 2016 am 11:25 AM
php by Tutorial use program shopping cart this

实用的php教程购物车程序
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。

//调用实例
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  $items = $cart->modi($key[$i],$value[$i]);
 }
}

$items = $cart->getCart();
//打印
echo "

";
setlocale(LC_MONETARY, 'it_IT');
foreach($items as $item){
 echo "";
 echo "
ID:".$item['ID']."";
 echo "
产品:".$item['name'];
 echo "
单价:".$item['price'];
 echo "
";
  $sum = $item['count']*$item['price'];
 echo "
合计:".round($sum,2);
 echo "
";
}
echo "";
echo "
";
echo "
";


?>




ID:
品名:
单价:
数量:


 


/**
 * Cart
 *
 * 购物车类
 *
 * @author  doodoo
 * @package     Cart
 * @category    Cart
 * @license     PHP License
 * @access      public
 * @version     $Revision: 1.10 $
 */
Class Cart{

 var $cart;
 var $totalCount; //商品总数量
 var $totalPrices; //商品总金额

  /**
     * Cart Constructor
     *
     * 类的构造函数,使购物车保持稳定的初始化状态
     *
     * @static
     * @access  public
     * @return  void   无返回值
     * @param   void   无参数
     */
  function Cart(){
  $this->totalCount = 0;
  $this->totalPrice = 0;
  $this->cart = array();
 }
 
 // }}}
    // {{{ add($item)

    /**
 * 增加商品到当前购物车
 *
    * @access public
    * @param  array $item 商品信息(一维数组:array(商品ID,商品名称,商品单价,商品数量))
    * @return array   返回当前购物车内商品的数组
    */
 function add($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); //这一句是必须的,因为上面的判断已经移动了数组的指标
  $key = current($item);
  if($key=="") return $this->cart;
  if($this->_isExists($key)){  //商品是否已经存在?
    $this->cart[$key]['count']  = end($item);
  return $this->cart;
  }

  $this->cart[$key]['ID']  = $key;
  $this->cart[$key]['name'] = next($item);
  $this->cart[$key]['price'] = next($item);
  $this->cart[$key]['count'] = next($item);

 return $this->cart;
 }

 // }}}
    // {{{ add($item)

    /**
 * 从当前购物车中取出部分或全部商品
 * 当 $key=="" 的时候,清空当前购物车
 * 当 $key!=""&&$count=="" 的时候,从当前购物车中拣出商品ID号为 $key 的全部商品
 * 当 $key!=""&&$count!="" 的时候,从当前购物车中拣出 $count个 商品ID号为 $key 的商品
 *
    * @access public
    * @param  string $key 商品ID
    * @return mixed   返回真假或当前购物车内商品的数组
    */
 function remove($key="",$count=""){
  if($key=="") {
   $this->cart = array();
   return true;
  }
  if(!array_key_exists($key,$this->cart)) return false;
  if($count==""){ //移去这一类商品
   unset($this->cart[$key]);
  }else{ //移去$count个商品
   $this->cart[$key]['count'] -= $count;
   if($this->cart[$key]['count']cart[$key]);
  }
  return $this->cart;
 }

 // }}}
    // {{{ modi($key,$value)

    /**
 * 修改购物车内商品ID为 $key 的商品的数量为 $value
 *
    * @access public
    * @param  string $key 商品ID
    * @param  int $value 商品数量
    * @return array  返回当前购物车内商品的数组;
    */
 function modi($key,$value){
  if(!$this->_isExists($key)) return $this->cart();  //不存在此商品,直接返回
  if($value   unset($this->cart[$key]);
   return $this->cart;
  }
  $this->cart[$key]['count'] = $value;
  return $this->cart;
 }


    /**
 * 返回当前购物车内商品的数组
 *
    * @access public
    * @return array  返回当前购物车内商品的数组;
    */
 function getCart(){
  return $this->cart;
 }

 // }}}
    // {{{ _isExists($key)

    /**
 * 判断当前购物车中是否存在商品ID号为$key的商品
 *
    * @access private
    * @param  string $key 商品ID
    * @return bool   true or false;
    */
    function _isExists($key)
    {
  if(isset($this->cart[$key])&&!empty($this->cart[$key])&&array_key_exists($key,$this->cart))
   return true;
    return false;
    }

 // }}}
    // {{{ isEmpty()

    /**
 * 判断当前购物车是否为空,即没有任何商品
 *
    * @access public
    * @return bool   true or false;
    */
 function isEmpty(){
  return !count($this->cart);
 }

 // }}}
    // {{{ _stat()

    /**
 * 取得部分统计信息
 *
    * @access private
    * @return bool  true or false;
    */
 function _stat(){
  if($this->isEmpty()) return false;
  foreach($this->cart as $item){
   $this->totalCount   = @end($item);
   $this->totalPrices  = @prev($item);
  }
  return true;
 }

 // }}}
    // {{{ totalPrices()

    /**
 * 取得当前购物车所有商品的总金额
 *
    * @access public
    * @return float  返回金额;
    */
 function totalPrices(){
  if($this->_stat())
   return $this->totalPrices;
 return 0;
 }

 // }}}
    // {{{ isEmpty()

    /**
 * 取得当前购物车所有商品的总数量和
 *
    * @access public
    * @return int ;
    */
 function totalCount(){
  if($this->_stat())
   return $this->totalCount; 
 return 0;
 }


}//End Class Cart
?>


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