/php/xuzhou58/xuzhou58.com/include/shopcar.class.php

<?php

define("DE_ItemEcode",'Shop_De_');//?????Cookie??,????????????!



class MemberShops

{

	var $OrdersId;

	var $productsId;



	//php5????PHP>=5.0

	function __construct()

	{

		$this->OrdersId = $this->getCookie("OrdersId");

		if(empty($this->OrdersId))

		{

			$this->OrdersId = $this->MakeOrders();

		}

	}



	//?????PHP<5.0

	function MemberShops()

	{

		$this->__construct();

	}



	//??????????

	function MakeOrders()

	{

		$this->OrdersId = 'S-P'.time().'RN'.mt_rand(100,999);

		$this->deCrypt($this->saveCookie("OrdersId",$this->OrdersId));

		return $this->OrdersId;

	}



	//???????????

	function addItem($id,$value)

	{

		$this->productsId = DE_ItemEcode.$id;

		$this->saveCookie($this->productsId,$value);

	}



	//??????????

	function delItem($id)

	{

		$this->productsId = DE_ItemEcode.$id;

		setcookie($this->productsId, "", time()-3600000,"/");

	}



	//???????

	function clearItem()

	{

		foreach($_COOKIE as $key => $vals)

		{

			if(ereg(DE_ItemEcode,$key))

			{

				setcookie($key, "", time()-3600000,"/");

			}

		}

		return 1;

	}



	//??????

	function getItems()

	{

		$Products = array();

		foreach($_COOKIE as $key => $vals)

		{

			if(ereg(DE_ItemEcode,$key) && ereg("[^_0-9a-z]",$key))

			{

				parse_str($this->deCrypt($vals), $arrays);

				$values = @array_values($arrays);

				if(!empty($values))

				{

					$arrays['price'] = sprintf("%01.2f", $arrays['price']);

					if($arrays['buynum'] < 1)

					{

						$arrays['buynum'] = 0;

					}

					$Products[$key] = $arrays;

				}

			}

		}

		unset($key,$vals,$values,$arrays);

		return $Products;

	}



	//????????

	function getOneItem($id)

	{

		$key = DE_ItemEcode.$id;

		if(!isset($_COOKIE[$key]) && empty($_COOKIE[$key]))

		{

			return '';

		}

		$itemValue = $_COOKIE[$key];

		parse_str($this->deCrypt($itemValue), $Products);

		unset($key,$itemValue);

		return $Products;

	}



	//??????????

	function cartCount()

	{

		$Products = $this->getItems();

		$itemsCount = count($Products);

		$i = 0;

		if($itemsCount > 0)

		{

			foreach($Products as $val)

			{

				$i = $i+$val['buynum'];

			}

		}

		unset($Products,$val,$itemsCount);

		return $i;

	}



	//??????????

	function priceCount()

	{

		$price = 0.00;

		foreach($_COOKIE as $key => $vals)

		{

			if(ereg(DE_ItemEcode,$key))

			{

				$Products = $this->getOneItem(str_replace(DE_ItemEcode,"",$key));

				if($Products['buynum'] > 0 && $Products['price'] > 0)

				{

					$price = $price + ($Products['price']*$Products['buynum']);

				}

			}

		}

		unset($key,$vals,$Products);

		return sprintf("%01.2f", $price);

	}



	//??????

	function enCrypt($txt)

	{

		srand((double)microtime() * 1000000);

		$encrypt_key = md5(rand(0, 32000));

		$ctr = 0;

		$tmp = '';

		for($i = 0; $i < strlen($txt); $i++)

		{

			$ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;

			$tmp .= $encrypt_key[$ctr].($txt[$i] ^ $encrypt_key[$ctr++]);

		}

		return base64_encode($this->setKey($tmp));

	}



	//???????

	function deCrypt($txt)

	{

		$txt = $this->setKey(base64_decode($txt));

		$tmp = '';

		for ($i = 0; $i < strlen($txt); $i++)

		{

			$tmp .= $txt[$i] ^ $txt[++$i];

		}

		return $tmp;

	}



	//??????

	function setKey($txt)

	{

		global $cfg_cookie_encode;

		$encrypt_key = md5(strtolower($cfg_cookie_encode));

		$ctr = 0;

		$tmp = '';

		for($i = 0; $i < strlen($txt); $i++)

		{

			$ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;

			$tmp .= $txt[$i] ^ $encrypt_key[$ctr++];

		}

		return $tmp;

	}



	//?????

	function enCode($array)

	{

		$arrayenc = array();

		foreach($array as $key => $val)

		{

			$arrayenc[] = $key.'='.urlencode($val);

		}

		return implode('&', $arrayenc);

	}



	//?????_cookie

	function saveCookie($key,$value)

	{

		if(is_array($value))

		{

			$value = $this->enCrypt($this->enCode($value));

		}

		else

		{

			$value = $this->enCrypt($value);

		}

		setcookie($key,$value,time()+36000,'/');

	}



	//?????_cookie

	function getCookie($key)

	{

		if(isset($_COOKIE[$key]) && !empty($_COOKIE[$key]))

		{

			return $this->deCrypt($_COOKIE[$key]);

		}

	}

}

?>