php購物車入門

只作爲了解購物車入門，可以參考ci框架的的購物車類。也是引用了其他一位博主的文章，鏈接忘了。。

sql文件 庫名shop

/*
Navicat MySQL Data Transfer

Source Server         : localhost_3306
Source Server Version : 50540
Source Host           : localhost:3306
Source Database       : shop

Target Server Type    : MYSQL
Target Server Version : 50540
File Encoding         : 65001

Date: 2015-06-11 14:17:36
*/

SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for `product`
-- ----------------------------
DROP TABLE IF EXISTS `product`;
CREATE TABLE `product` (
  `pid` int(11) NOT NULL AUTO_INCREMENT,
  `pname` varchar(255) DEFAULT NULL,
  `pimg` varchar(255) DEFAULT NULL,
  `price` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`pid`)
) ENGINE=MyISAM AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of product
-- ----------------------------
INSERT INTO product VALUES ('1', 'ipad', 'http://a.com/error.png', '12');
INSERT INTO product VALUES ('2', 'air', 'http://a.com/error.png', '13');
INSERT INTO product VALUES ('3', 'pro', 'http://a.com/error.png', '14');
INSERT INTO product VALUES ('4', 'shuffle', 'http://a.com/error.png', '15');

我自己配置的vhost a.com。可以直接在主目錄下添加一個圖片即可。也可以直接無視圖片。

一共是coon.php,index.php,buy.php,delete.php,car.php

*coon

<?php
 $conn=mysql_connect("localhost","root","root");
 mysql_select_db("shop",$conn);
 mysql_query("set names utf8");
?>

*index.php

<?php
include ("coon.php");
error_reporting(0);
$sql="select * from product";//查詢所有商品
$rs=mysql_query($sql,$conn);//執行sql語句，得到一個結果集
while($row=mysql_fetch_array($rs))//遍歷結果集
{
?>
<table width="343" height="152" border="1">
  <tr>
   <td width="124"rowspan="3"><img src="<?php echo $row["pimg"]?>" width="123" height="121" border="0"/></td>
   <td width="203"height="35">貨物名稱：<?php echo$row["pname"]?></td>
  </tr>
  <tr>
   <tdheight="28">貨物價格：<?php echo $row["price"]?></td>
  </tr>
  <tr>
   <td height="27"align="center"><a href="buy.php?id=<?php echo $row["pid"]?>&pname=<?php
    echo $row["pname"]?>">購買</a></td>
 </tr> </table>
<?php
}
?>

*buy.php

<?php
	session_start();
	ob_start();
	$pid=$_GET['id'];
	$name=$_GET['pname'];
	$arr=$_SESSION['mycar'];

	if(is_array($arr)){
		if(array_key_exists($pid,$arr)){
			//  買過此商品，數量加1，返回給購物車數組
			$goods=$arr[$pid];
			$goods['num']+=1;
			$arr[$pid]=$goods;	
		}else{
			$arr[$pid]=array('pid'=>$pid,'name'=>$name,'num'=>'1');
		}

	}else{
		$arr[$pid]=array('pid'=>$pid,'name'=>$name,'num'=>'1');
	}

	$_SESSION['mycar']=$arr;
	// session_destroy();
	ob_clean();

	header('location:car.php');

*delete.php

<?php
	session_start();
	ob_start();
	$pid=$_GET['id'];
	$arr=$_SESSION['mycar'];

	foreach ($arr as $key => $value) {
		
		if($key==$pid){
			unset($arr[$key]);
		}
	}

	$_SESSION['mycar']=$arr;
	ob_clean();
	header('location:car.php');
	

*car.php

<?php

session_start();

$arr=$_SESSION['mycar'];

if(count($arr)>0){


?>


<table width="600" height="37"border="1">
  <tr>
   <tdwidth="96">商品ID</td>
   <tdwidth="158">商品名稱</td>
   <tdwidth="154">商品數量</td>
   <tdwidth="177">刪除</td>
  </tr>
<?php
foreach($arr as $a)//遍歷這個二維數組
{
?>
     <tr>
   <td width="96"><?php echo $a["pid"]?></td>
   <td width="158"><?php echo $a["name"]?></td>
   <td width="154"><?php echo $a["num"]?></td>
   <td width="177"><a href="delete.php?id=<?php echo $a['pid']?>">刪除</a></td>
</tr>
<?php
}
?>
</table>
</form>
<a href="index.php">返回繼續購物</a>

<?php
}else{
	echo 'empty car '.'<a href="index.php"> 去購物</a>';
}
?>