Use PHP to add shopping products, PHP to add shopping products_PHP tutorial

Use PHP to add shopping products, PHP to add shopping products

<span><span> 1</span> <?<span>php
</span><span> 2</span> <span>session_start</span><span>(); 
</span><span> 3</span> <span>header</span> ( "Content-type: text/html; charset=UTF-8" );                         <span>//</span><span>设置文件编码格式</span>
<span> 4</span> <span>require</span>("system/system.inc.php");                          <span>//</span><span>包含配置文件</span>
<span> 5</span> <span>/*</span><span>*
</span><span> 6</span> <span>    *  1表示添加成功
</span><span> 7</span> <span>    *  2表示用户没有登录
</span><span> 8</span> <span>    *  3表示商品已添加过
</span><span> 9</span> <span>    *  4表示添加时出现错误
</span><span>10</span> <span>    *  5表示没有商品添加
</span><span>11</span> <span>*/</span>
<span>12</span> <span>$reback</span> = '0'<span>;
</span><span>13</span> <span>if</span>(<span>empty</span>(<span>$_SESSION</span>['member'])){ <span>//</span><span>判断用户有没有登录</span>
<span>14</span>     <span>$reback</span> = '2';              <span>//</span><span>没有就返回2</span>
<span>15</span> }<span>else</span><span>{
</span><span>16</span>     <span>$key</span> = <span>$_GET</span>['key'];         <span>//</span><span>判断用户有没有添加商品</span>
<span>17</span>     <span>if</span>(<span>$key</span> == ''){              <span>//</span><span>判断用户有没有添加商品，如果为空就表示没有商品喽</span>
<span>18</span>         <span>$reback</span> = '5';           <span>//</span><span>返回值</span>
<span>19</span>     }<span>else</span><span>{    
</span><span>20</span>         <span>$boo</span> = <span>false</span>;             <span>//</span><span>定义商品有没有被添加</span>
<span>21</span>         <span>$sqls</span> = "select id,shopping from tb_user where name = '".<span>$_SESSION</span>['member']."'"<span>; 
</span><span>22</span>         <span>$shopcont</span> = <span>$admindb</span>->ExecSQL(<span>$sqls</span>,<span>$conn</span><span>);
</span><span>23</span>         <span>if</span>(!<span>empty</span>(<span>$shopcont</span>[0]['shopping'])){  <span>//</span><span>shopping为三维数组，用empty判断商品是否为空</span>
<span>24</span>             <span>$arr</span> = <span>explode</span>('@',<span>$shopcont</span>[0]['shopping']);<span>//</span><span>@分割数组也就是每个商品的值</span>
<span>25</span>             <span>foreach</span>(<span>$arr</span> <span>as</span> <span>$value</span>){ <span>//</span><span>foreach取出每个数组的值</span>
<span>26</span>                 <span>$arrtmp</span> = <span>explode</span>(',',<span>$value</span>);            <span>//</span><span>用explode分割得出商品的俱体信息</span>
<span>27</span>                 <span>if</span>(<span>$key</span> == <span>$arrtmp</span>[0]){                 <span>//</span><span>如果添加的商品等于已添加的商品</span>
<span>28</span>                     <span>$reback</span> = '3';                      <span>//</span><span>那么返回值就表示已添加</span>
<span>29</span>                     <span>$boo</span> = <span>true</span><span>;                         
</span><span>30</span>                     <span>break</span><span>;
</span><span>31</span> <span>                }
</span><span>32</span> <span>            }
</span><span>33</span>             <span>if</span>(<span>$boo</span> == <span>false</span>){              <span>//</span><span>方法一添加商品</span>
<span>34</span>                 <span>$shopcont</span>[0]['shopping'] .= '@'.<span>$key</span>.',1'<span>; 
</span><span>35</span>                 <span>$update</span> = "update tb_user set shopping='".<span>$shopcont</span>[0]['shopping']."' where name = '".<span>$_SESSION</span>['member']."'"<span>;
</span><span>36</span>                 <span>$shop</span> = <span>$admindb</span>->ExecSQL(<span>$update</span>,<span>$conn</span><span>);
</span><span>37</span>                 <span>if</span>(<span>$shop</span><span>){
</span><span>38</span>                     <span>$reback</span> = 1<span>;
</span><span>39</span>                 }<span>else</span><span>{
</span><span>40</span>                     <span>$reback</span> = '4'<span>;
</span><span>41</span> <span>                }
</span><span>42</span> <span>            }
</span><span>43</span>         }<span>else</span><span>{
</span><span>44</span>             <span>$arrtmp</span> = <span>$key</span>.",1";          <span>//</span><span>方法二添加商品</span>
<span>45</span>             <span>$updates</span> = "update tb_user set shopping='".<span>$arrtmp</span>."' where name = '".<span>$_SESSION</span>['member']."'"<span>;
</span><span>46</span>             <span>$result</span> = <span>$admindb</span>->ExecSQL(<span>$updates</span>,<span>$conn</span><span>);
</span><span>47</span>             <span>if</span>(<span>$result</span><span>){
</span><span>48</span>                 <span>$reback</span> = 1<span>;
</span><span>49</span>             }<span>else</span><span>{
</span><span>50</span>                 <span>$reback</span> = '4'<span>;
</span><span>51</span> <span>            }
</span><span>52</span> <span>        }
</span><span>53</span> <span>    }
</span><span>54</span> <span>}
</span><span>55</span> <span>echo</span> <span>$reback</span><span>;
</span><span>56</span> ?></span>

PHP shopping website How to add products in the background and display them in the foreground?

You can use PHP online store program, or you can write it yourself!

If you use an online store program, please read the relevant background instructions in detail. It's actually very simple.

If you have the ability to write it, you can definitely write it yourself, EASY.

How to prevent the number of items in the shopping cart from being automatically incremented by 1 when refreshing the browser, a shopping website made with php

This is how you do asynchronous submission using Ajax. . . addtocart();

http://www.bkjia.com/PHPjc/838914.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/838914.htmlTechArticleUse PHP to add shopping products, PHP to add shopping products 1? php 2 session_start (); 3 header ( "Content- type: text/html; charset=UTF-8" ); // Set file encoding format 4 require ("system/s...