php 购物车的简单实现代码与示例

3. session_start();

4. $conn=mysql_connect("localhost","root","admin");
5. mysql_select_db("songyu");
6. //检查数组元素出现次数
7. function check_count($array,$element)
8. {
9. $times=0;
10. for($i=0;$i {
11. if($element==$array[$i])
12. {
13. $times++;
14. }
15. }
16. return $times;
17. }
18. if(isset($_GET["p_id"]))
19. {
20. $p_id=$_GET["p_id"];
21. }

22. $total_price=0;

23. array_push($_SESSION["cart"], $p_id);
25. $cart=$_SESSION["cart"];
26. echo "your cart:
    ";
27. $new_array=array_count_values($cart);
28. foreach ($new_array as $key => $value)
29. {
30. $sql="select * from product where id='".$key."'";
31. $result=mysql_query($sql);
32. $out=mysql_fetch_array($result);
33. echo $out[name]."---个数:".$value."--".($out[price]*$value)."
    ";
34. $total_price=$total_price+($out[price]*$value);
35. }
36. echo "
    
    ";
37. echo "-----------总价--------------
    ";
38. echo $total_price;
39. ?>
40. 回s

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2、login.php 登录页

2. if(isset($_SESSION["user"]))
3. {
4. unset($_SESSION["user"]);
5. }
6. if(isset($_SESSION["cart"]))
7. {
8. unset($_SESSION["cart"]);
9. }
10. ?>
11. username:
    
    

    password:
    
    

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3、product.php 产品页

2. session_start();
3. $conn=mysql_connect("localhost","root","admin");
4. mysql_select_db("songyu");
5. $sql_product="select * from product";
6. $res=mysql_query($sql_product);
7. if(!isset($_SESSION["cart"]))
8. {
9. $_SESSION["cart"]=array();
10. }
11. while($out2=mysql_fetch_array($res))
12. {
13. echo "".$out2[name]."
    ";
14. echo $out2[price]."
    ";
15. echo "

    ---

    ";
16. }
17. ?>

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4、product_index.php 产品索引页

2. $conn=mysql_connect("localhost","root","admin");
3. mysql_select_db("songyu");
4. $sql="select * from user where username='".$_POST["username"]."' and password='".$_POST["password"]."'";
5. $result=mysql_query($sql);
6. $out=mysql_fetch_array($result); //bbs.it-home.org
7. if(!$out)
8. {
9. echo "wrong!";
10. }
11. else
12. {
13. $_SESSION["user"]=$out[id];
14. echo "";
15. }
16. ?>

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