Home > Article > Backend Development > PHP basic example: Product information management system v11
PHP basic example: Product information management system v11
- WBOYOriginal
- 2016-08-08 09:23:413569browse
Achieve the goal: use php and mysql to write a product information management system with a shopping cart function
1. Create database and table
1. Create database and table: demodb
2. Create table: goods
Field : Product number, product name, product type, product picture, unit price, product description, inventory, add time
2. Create a php file and write the code (the following is the php file to be created and its use)
add.php Product Add page
Edit.php Product information editing form page
index.php Product information browsing page
action.php Perform operations such as adding, modifying and deleting product information
dbconfig.php Public configuration file, database connection configuration information
menu.php Website public navigation bar
uploads/ Storage directory for uploaded images
function.php Public function library file: uploading of image information, scaling and other processing functions
addCart.php Add shopping cart information operation (Put the information to be purchased into the SESSION)
myCart.php implements the browsing operation of the shopping cart information, and implements the statistics of product information (subtotal and total price)
clearCart.php implements the single product of the shopping cart information Delete or clear the shopping cart operation
UpdateCart.php Modify the number of items in the shopping cart to prevent too small constraints
Illustration of the relationship between each php file:
Okay, then here is the code part:
First of all, build Table statement:
<span> 1</span><span>create</span><span>database</span> newsdb;<span>//</span><span>创建库语句 </span><span> 2</span><span> 3</span><span>create</span><span>table</span><span> goods ( </span><span> 4</span> id <span>int</span>(<span>10</span>) unsigned <span>NOT</span><span>NULL</span><span> AUTO_INCREMENT, </span><span> 5</span> name <span>varchar</span>(<span>64</span>) <span>NOT</span><span>NULL</span><span>, </span><span> 6</span> typeid <span>int</span>(<span>10</span>) unsigned <span>NOT</span><span>NULL</span><span>, </span><span> 7</span> price <span>double</span>(<span>6</span>,<span>2</span>) unsigned <span>NOT</span><span>NULL</span><span>, </span><span> 8</span> total <span>int</span>(<span>10</span>) unsigned <span>NOT</span><span>NULL</span><span>, </span><span> 9</span> pic <span>varchar</span>(<span>32</span>) <span>NOT</span><span>NULL</span><span>, </span><span>10</span> note <span>text</span><span>, </span><span>11</span> addtime <span>int</span>(<span>10</span>) unsigned <span>NOT</span><span>NULL</span><span>, </span><span>12</span><span>PRIMARY</span><span>KEY</span><span> (`id`) </span><span>13</span> ) <span>//</span>创建表语句Table statement
The following are the codes for each PHP file. Friends who need it can directly copy each code and put it in the same directory, and create uplaods in the same directory. Folder to store uploaded pictures
<span> 1</span> <html>
<span> 2</span> <head>
<span> 3</span> <title>商品信息管理</title>
<span> 4</span> </head>
<span> 5</span> <body>
<span> 6</span> <center>
<span> 7</span> <?php <span>include</span>("menu.php");<span>//</span><span>导入导航栏 ?><span> 8</span> <h3>发布商品信息</h3>
<span> 9</span> <form action="action.php?action=add" enctype="multipart/form-data" method="post">
<span>10</span> <table border="0" width="300">
<span>11</span> <tr>
<span>12</span> <td align="right">名称：</td>
<span>13</span> <td><input type="text" name="name"/></td>
<span>14</span> </tr>
<span>15</span> <tr>
<span>16</span> <td align="right">类型：</td>
<span>17</span> <td>
<span>18</span> <select name="typeid">
<span>19</span> <?<span>php
</span><span>20</span><span>include</span>("dbconfig.php"<span>);
</span><span>21</span><span>foreach</span>(<span>$typelist</span><span>as</span><span>$k</span>=><span>$v</span><span>)
</span><span>22</span><span> {
</span><span>23</span><span>echo</span> "<option value='{<span>$k</span>}'>{<span>$v</span>}</option>"<span>;
</span><span>24</span><span> }
</span><span>25</span> ?>
<span>26</span> </select>
<span>27</span> </td>
<span>28</span> </tr>
<span>29</span> <tr>
<span>30</span> <td align="right">单价：</td>
<span>31</span> <td><input type="text" name="price"/></td>
<span>32</span> </tr>
<span>33</span> <tr>
<span>34</span> <td align="right">库存：</td>
<span>35</span> <td><input type="text" name="total"/></td>
<span>36</span> </tr>
<span>37</span> <tr>
<span>38</span> <td align="right">图片：</td>
<span>39</span> <td><input type="file" name="pic"/></td>
<span>40</span> </tr>
<span>41</span> <tr>
<span>42</span> <td align="right" valign="top">描述：</td>
<span>43</span> <td><textarea rows="5" cols="20" name="note"></textarea></td>
<span>44</span> </tr>
<span>45</span> <tr>
<span>46</span> <td colspan="2" align="center">
<span>47</span> <input type="submit" value="添加"/> &<span>nbsp;
</span><span>48</span> <input type="reset" value="重置"/>
<span>49</span> </td>
<span>50</span> </tr>
<span>51</span> </table>
<span>52</span> </form>
<span>53</span> </center>
<span>54</span> </body>
<span>55</span> </html>
add.php
<span> 1</span> <?<span>php
</span><span> 2</span><span>//</span><span>执行商品信息的增、删、改的操作
</span><span> 3</span><span> 4</span><span>//一、导入配置文件和函数库文件</span><span> 5</span><span>require</span>("dbconfig.php"<span>);
</span><span> 6</span><span>require</span>("function.php"<span>);
</span><span> 7</span><span>//</span><span>二、连接MySQL，选择数据库</span><span> 8</span><span>$link</span> = <span>mysql_connect</span>(HOST,USER,PASS) or <span>die</span>("数据库连接失败"<span>);
</span><span> 9</span><span>mysql_select_db</span>(DBNAME,<span>$link</span><span>);
</span><span> 10</span><span> 11</span><span> 12</span><span>//</span><span>三、获取action参数的值，并做对应的操作</span><span> 13</span><span>switch</span>(<span>$_GET</span>["action"<span>])
</span><span> 14</span><span> {
</span><span> 15</span><span>case</span> "add": <span>//</span><span>添加
</span><span> 16</span><span> //1.获取添加信息</span><span> 17</span><span>$name</span> = <span>$_POST</span>["name"<span>];
</span><span> 18</span><span>$typeid</span> = <span>$_POST</span>["typeid"<span>];
</span><span> 19</span><span>$price</span> = <span>$_POST</span>["price"<span>];
</span><span> 20</span><span>$total</span> = <span>$_POST</span>["total"<span>];
</span><span> 21</span><span>$note</span> = <span>$_POST</span>["note"<span>];
</span><span> 22</span><span>$addtime</span> = <span>time</span><span>();
</span><span> 23</span><span>//</span><span>2.验证()省略</span><span> 24</span><span>if</span>(<span>empty</span>(<span>$name</span><span>))
</span><span> 25</span><span> {
</span><span> 26</span><span>die</span>("商品名称必须有值"<span>);
</span><span> 27</span><span> }
</span><span> 28</span><span>//</span><span>3.执行图片上传</span><span> 29</span><span>$upinfo</span> = uploadFile("pic","./uploads/"<span>);
</span><span> 30</span><span>if</span>(<span>$upinfo</span>["error"]===<span>false</span><span>)
</span><span> 31</span><span> {
</span><span> 32</span><span>die</span>("图片信息上传失败：".<span>$upinfo</span>["info"<span>]);
</span><span> 33</span> }<span>else</span><span> 34</span><span> {
</span><span> 35</span><span>//</span><span>上传成功</span><span> 36</span><span>$pic</span> = <span>$upinfo</span>["info"];<span>//</span><span>获取上传成功的图片名</span><span> 37</span><span> 38</span><span> }
</span><span> 39</span><span>//</span><span>4.执行图片缩放</span><span> 40</span> imageUpdateSize('./uploads/'.<span>$pic</span>,50,50<span>);
</span><span> 41</span><span>//</span><span>5.拼装sql语句，并执行添加</span><span> 42</span><span>$sql</span> = "insert into goods values(null,'{<span>$name</span>}','{<span>$typeid</span>}',{<span>$price</span>},{<span>$total</span>},'{<span>$pic</span>}','{<span>$note</span>}',{<span>$addtime</span>})"<span>;
</span><span> 43</span><span>mysql_query</span>(<span>$sql</span>,<span>$link</span><span>);
</span><span> 44</span><span>//</span><span>6.判断并输出结果</span><span> 45</span><span>if</span>(<span>mysql_insert_id</span>(<span>$link</span>)>0<span>)
</span><span> 46</span><span> {
</span><span> 47</span><span>echo</span> "商品发布成功"<span>;
</span><span> 48</span> }<span>else</span><span> 49</span><span> {
</span><span> 50</span><span>echo</span> "商品发布失败"<span>;
</span><span> 51</span><span> }
</span><span> 52</span><span>echo</span> "<br> <a href='index.php'>查看商品信息<a>"<span>;
</span><span> 53</span><span> 54</span><span>break</span><span>;
</span><span> 55</span><span>case</span> "del": <span>//</span><span>删除
</span><span> 56</span><span> //获取要删除的id号并拼装删除sql，执行</span><span> 57</span><span>$sql</span> = "delete from goods where id={<span>$_GET</span>['id']}"<span>;
</span><span> 58</span><span> 59</span><span>mysql_query</span>(<span>$sql</span>,<span>$link</span><span>);
</span><span> 60</span><span>//</span><span>执行图片删除</span><span> 61</span><span>if</span>(<span>mysql_affected_rows</span>(<span>$link</span>)>0<span>)
</span><span> 62</span><span> {
</span><span> 63</span> @<span>unlink</span>("./uploads/".<span>$_GET</span>['picname'<span>]);
</span><span> 64</span> @<span>unlink</span>("./uploads/s_".<span>$_GET</span>['picname'<span>]);
</span><span> 65</span><span> }
</span><span> 66</span><span>//</span><span>跳转到浏览界面</span><span> 67</span><span>header</span>("Location:index.php"<span>);
</span><span> 68</span><span>break</span><span>;
</span><span> 69</span><span> 70</span><span>case</span> "update": <span>//</span><span>修改
</span><span> 71</span><span> //1.获取要修改的信息</span><span> 72</span><span>$name</span> = <span>$_POST</span>["name"<span>];
</span><span> 73</span><span>$typeid</span> = <span>$_POST</span>["typeid"<span>];
</span><span> 74</span><span>$price</span> = <span>$_POST</span>["price"<span>];
</span><span> 75</span><span>$total</span> = <span>$_POST</span>["total"<span>];
</span><span> 76</span><span>$note</span> = <span>$_POST</span>["note"<span>];
</span><span> 77</span><span>$id</span> = <span>$_POST</span>['id'<span>];
</span><span> 78</span><span>$pic</span> = <span>$_POST</span>['oldpic'<span>];
</span><span> 79</span><span>//</span><span>2.数据验证</span><span> 80</span><span>if</span>(<span>empty</span>(<span>$name</span><span>))
</span><span> 81</span><span> {
</span><span> 82</span><span>die</span>("商品名称必须有值"<span>);
</span><span> 83</span><span> }
</span><span> 84</span><span>//</span><span>3.判断有无图片上传</span><span> 85</span><span>if</span>(<span>$_FILES</span>['pic']['error']!=4<span>)
</span><span> 86</span><span> {
</span><span> 87</span><span>//</span><span>执行上传</span><span> 88</span><span>$upinfo</span> = uploadFile("pic","./uploads/"<span>);
</span><span> 89</span><span>if</span>(<span>$upinfo</span>["error"]===<span>false</span><span>)
</span><span> 90</span><span> {
</span><span> 91</span><span>die</span>("图片信息上传失败：".<span>$upinfo</span>["info"<span>]);
</span><span> 92</span> }<span>else</span><span> 93</span><span> {
</span><span> 94</span><span>//</span><span>上传成功</span><span> 95</span><span>$pic</span> = <span>$upinfo</span>["info"];<span>//</span><span>获取上传成功的图片名
</span><span> 96</span><span> //4.有图片上传执行缩放</span><span> 97</span> imageUpdateSize('./uploads/'.<span>$pic</span>,50,50<span>);
</span><span> 98</span><span> }
</span><span> 99</span><span> }
</span><span>100</span><span>101</span><span>102</span><span>//</span><span>5.执行修改</span><span>103</span><span>$sql</span> = "update goods set name='{<span>$name</span>}',typeid={<span>$typeid</span>},price={<span>$price</span>},total={<span>$total</span>},note='{<span>$note</span>}',pic='{<span>$pic</span>}' where id={<span>$id</span>}"<span>;
</span><span>104</span><span>mysql_query</span>(<span>$sql</span>,<span>$link</span><span>);
</span><span>105</span><span>//</span><span>6.判断是否修改成功</span><span>106</span><span>if</span>(<span>mysql_affected_rows</span>(<span>$link</span>)>0<span>)
</span><span>107</span><span> {
</span><span>108</span><span>if</span>(<span>$_FILES</span>['pic']['error']!=4<span>)
</span><span>109</span><span> {
</span><span>110</span><span>//</span><span>若有图片上传，就删除老图片</span><span>111</span> @<span>unlink</span>("./uploads/".<span>$_POST</span>['oldpic'<span>]);
</span><span>112</span> @<span>unlink</span>("./uploads/s_".<span>$_POST</span>['oldpic'<span>]);
</span><span>113</span><span> }
</span><span>114</span><span>echo</span> "修改成功"<span>;
</span><span>115</span> }<span>else</span><span>116</span><span> {
</span><span>117</span><span>echo</span> "修改失败".<span>mysql_error</span><span>();
</span><span>118</span><span> }
</span><span>119</span><span>echo</span> "<br> <a href='index.php'>查看商品信息<a>"<span>;
</span><span>120</span><span>break</span><span>;
</span><span>121</span><span>default</span>:
<span>122</span><span>echo</span> "错误";<span>break</span><span>;
</span><span>123</span><span>124</span><span> }
</span><span>125</span><span>//</span><span>四、关闭数据库</span><span>126</span><span>mysql_close</span>(<span>$link</span>);
action.php
<span> 1</span> <?<span>php
</span><span> 2</span><span>//</span><span>公共信息配置文件
</span><span> 3</span><span> 4</span><span>//数据库信息配置</span><span> 5</span><span>define</span>("HOST","localhost");<span>//</span><span>主机名</span><span> 6</span><span>define</span>("USER","root"); <span>//</span><span>用户名</span><span> 7</span><span>define</span>("PASS","root"); <span>//</span><span>密码</span><span> 8</span><span>define</span>("DBNAME","demodb"); <span>//</span><span>数据库名
</span><span> 9</span><span>10</span><span>//商品类型列表信息</span><span>11</span><span>$typelist</span>=<span>array</span>(1=>"服装",2=>"数码",3=>"食品"<span>);
</span><span>12</span><span>13</span><span>14</span> ?>
dbconfig.php
<span> 1</span> <html>
<span> 2</span> <head>
<span> 3</span> <title>商品信息管理</title>
<span> 4</span> </head>
<span> 5</span> <body>
<span> 6</span> <center>
<span> 7</span> <?php <span>include</span>("menu.php");<span>//</span><span>导入导航栏 ?><span> 8</span> <h3>浏览商品信息<h3>
<span> 9</span><span>10</span> <table border="1" width="700">
<span>11</span> <tr>
<span>12</span> <th>商品编号</th>
<span>13</span> <th>商品名称</th>
<span>14</span> <th>商品图片</th>
<span>15</span> <th>单价</th>
<span>16</span> <th>库存量</th>
<span>17</span> <th>添加时间</th>
<span>18</span> <th>操作</th>
<span>19</span> </tr>
<span>20</span> <?<span>php
</span><span>21</span><span>//</span><span>从数据库中读取信息并输出到浏览器表格中
</span><span>22</span><span> //1.导入配置文件</span><span>23</span><span>require</span>("dbconfig.php"<span>);
</span><span>24</span><span>//</span><span>2.连接数据库，并选择数据库</span><span>25</span><span>$link</span> = @<span>mysql_connect</span>(HOST,USER,PASS) or <span>die</span>("数据库连接失败"<span>);
</span><span>26</span><span>mysql_select_db</span>(DBNAME,<span>$link</span><span>);
</span><span>27</span><span>//</span><span>3.执行商品信息查询</span><span>28</span><span>$sql</span>="select * from goods"<span>;
</span><span>29</span><span>$result</span> = <span>mysql_query</span>(<span>$sql</span>,<span>$link</span><span>);
</span><span>30</span><span>31</span><span>//</span><span>4.解析商品信息（解析结果集）</span><span>32</span><span>while</span>(<span>$row</span> = <span>mysql_fetch_assoc</span>(<span>$result</span><span>))
</span><span>33</span><span> {
</span><span>34</span><span>echo</span> "<tr>"<span>;
</span><span>35</span><span>echo</span> "<td>{<span>$row</span>["id"]}</td>"<span>;
</span><span>36</span><span>echo</span> "<td>{<span>$row</span>["name"]}</td>"<span>;
</span><span>37</span><span>echo</span> "<td><img src='./uploads/s_{<span>$row</span>['pic']}'/></td>"<span>;
</span><span>38</span><span>echo</span> "<td>{<span>$row</span>["price"]}</td>"<span>;
</span><span>39</span><span>echo</span> "<td>{<span>$row</span>["total"]}</td>"<span>;
</span><span>40</span><span>echo</span> "<td>".<span>date</span>("Y-m-d H:i:s",<span>$row</span>['addtime'])."</td>"<span>;
</span><span>41</span><span>echo</span> "<span><td>
</span><span>42</span> <a href='action.php?action=del&id={<span>$row</span>['id']}&picname={<span>$row</span><span>['pic']}'>删除</a>
<span>43</span> <a href='edit.php?id={<span>$row</span><span>['id']}'>修改</a>
<span>44</span> <a href='addCart.php?id={<span>$row</span><span>['id']}'>放入购物车</a>
<span>45</span><span>46</span> </td>"<span>;
</span><span>47</span><span>echo</span> "</tr>"<span>;
</span><span>48</span><span> }
</span><span>49</span><span>//</span><span>5.释放结果集，关闭数据库</span><span>50</span> ?>
<span>51</span> </table>
<span>52</span> </center>
<span>53</span> </body>
<span>54</span> </html>
index .php
<span> 1</span> <html>
<span> 2</span> <head>
<span> 3</span> <title>商品信息管理</title>
<span> 4</span> </head>
<span> 5</span> <body>
<span> 6</span> <center>
<span> 7</span> <?<span>php
</span><span> 8</span><span>include</span>("menu.php");<span>//</span><span>导入导航栏
</span><span> 9</span><span> //1.导入配置文件</span><span>10</span><span>require</span>("dbconfig.php"<span>);
</span><span>11</span><span>//</span><span>2.连接数据库，并选择数据库</span><span>12</span><span>$link</span> = @<span>mysql_connect</span>(HOST,USER,PASS) or <span>die</span>("数据库连接失败"<span>);
</span><span>13</span><span>mysql_select_db</span>(DBNAME,<span>$link</span><span>);
</span><span>14</span><span>//</span><span>3.获取要修改的商品信息</span><span>15</span><span>$sql</span>="select *from goods where id={<span>$_GET</span>['id']}"<span>;
</span><span>16</span><span>$result</span> = <span>mysql_query</span>(<span>$sql</span>,<span>$link</span><span>);
</span><span>17</span><span>//</span><span>4.判断是否获取到要编辑的商品信息</span><span>18</span><span>if</span>(<span>$result</span>&&<span>mysql_num_rows</span>(<span>$result</span>)>0<span>)
</span><span>19</span><span> {
</span><span>20</span><span>$shop</span>=<span>mysql_fetch_assoc</span>(<span>$result</span>);<span>//</span><span>解析出要修改的商品信息</span><span>21</span> }<span>else</span><span>22</span><span> {
</span><span>23</span><span>die</span>("没有找到要修改的商品信息"<span>);
</span><span>24</span><span> }
</span><span>25</span><span>26</span> ?>
<span>27</span> <h3>编辑商品信息</h3>
<span>28</span> <form action="action.php?action=update" enctype="multipart/form-data" method="post">
<span>29</span> <input type="hidden" name="id" value="<?php echo <span>$shop</span>['id']; ?>" />
<span>30</span> <input type="hidden" name="oldpic" value="<?php echo <span>$shop</span>['pic']; ?>" />
<span>31</span><span>32</span> <table border="0" width="300">
<span>33</span> <tr>
<span>34</span> <td align="right">名称：</td>
<span>35</span> <td><input type="text" name="name" value="<?php echo <span>$shop</span>['name']; ?>" /></td>
<span>36</span> </tr>
<span>37</span> <tr>
<span>38</span> <td align="right">类型：</td>
<span>39</span> <td>
<span>40</span> <select name="typeid">
<span>41</span> <?<span>php
</span><span>42</span><span>include</span>("dbconfig.php"<span>);
</span><span>43</span><span>foreach</span>(<span>$typelist</span><span>as</span><span>$k</span>=><span>$v</span><span>)
</span><span>44</span><span> {
</span><span>45</span><span>$sd</span> = (<span>$shop</span>['typeid']==<span>$k</span>)?"selected":"";<span>//</span><span>判断是否当前的类型</span><span>46</span><span>echo</span> "<option value='{<span>$k</span>}' {<span>$sd</span>}>{<span>$v</span>}</option>"<span>;
</span><span>47</span><span> }
</span><span>48</span> ?>
<span>49</span> </select>
<span>50</span> </td>
<span>51</span> </tr>
<span>52</span> <tr>
<span>53</span> <td align="right">单价：</td>
<span>54</span> <td><input type="text" name="price" value="<?php echo <span>$shop</span>['price']; ?>" /></td>
<span>55</span> </tr>
<span>56</span> <tr>
<span>57</span> <td align="right">库存：</td>
<span>58</span> <td><input type="text" name="total" value="<?php echo <span>$shop</span>['total']; ?>" /></td>
<span>59</span> </tr>
<span>60</span> <tr>
<span>61</span> <td align="right">图片：</td>
<span>62</span> <td><input type="file" name="pic"/></td>
<span>63</span> </tr>
<span>64</span> <tr>
<span>65</span> <td align="right" valign="top">描述：</td>
<span>66</span> <td><textarea rows="5" cols="20" name="note"><?php <span>echo</span><span>$shop</span>['note']; ?></textarea></td>
<span>67</span> </tr>
<span>68</span><span>69</span> <tr>
<span>70</span> <td colspan="2" align="center">
<span>71</span> <input type="submit" value="修改" /> &<span>nbsp;
</span><span>72</span> <input type="reset" value="重置" />
<span>73</span> </td>
<span>74</span> </tr>
<span>75</span> <tr>
<span>76</span> <td align="right" valign="top"> </td>
<span>77</span> <td><img src="./uploads/<?php echo <span>$shop</span>['pic'];?>" /></td>
<span>78</span> </tr>
<span>79</span> </table>
<span>80</span> </form>
<span>81</span> </center>
<span>82</span> </body>
<span>83</span> </html>
edit.php
<span> 1</span> <?<span>php
</span><span> 2</span><span>//</span><span>公共函数库</span><span> 3</span><span> 4</span><span>/*</span><span> 5</span><span> * 文件上传处理函数
</span><span> 6</span><span> * @param string filename 要上传的文件表单项名
</span><span> 7</span><span> * @param string $path 上传文件的保存路径
</span><span> 8</span><span> * @param array 允许的文件类型
</span><span> 9</span><span> * @return array 两个单元： ["error"] false:失败，ture:成功
</span><span> 10</span><span> * ["info"] 存放失败原因或成功的文件名
</span><span> 11</span><span>*/</span><span> 12</span><span> 13</span><span>function</span> uploadFile(<span>$filename</span>,<span>$path</span>,<span>$typelist</span>=<span>null</span><span>)
</span><span> 14</span><span>{
</span><span> 15</span><span>//</span><span>1.获取上传文件的名字</span><span> 16</span><span>$upfile</span> = <span>$_FILES</span>[<span>$filename</span><span>];
</span><span> 17</span><span>if</span>(<span>empty</span>(<span>$typelist</span><span>))
</span><span> 18</span><span> {
</span><span> 19</span><span>$typelist</span>=<span>array</span>("image/gif","image/jpg","image/jpeg","image/png","image/pjpeg","image/x-png");<span>//</span><span>允许的文件类型</span><span> 20</span><span> }
</span><span> 21</span><span>$res</span>=<span>array</span>("error"=><span>false</span>);<span>//</span><span>存放返回的结果
</span><span> 22</span><span> //2.过滤上传文件的错误号</span><span> 23</span><span>if</span>(<span>$upfile</span>["error"]>0<span>)
</span><span> 24</span><span> {
</span><span> 25</span><span>switch</span>(<span>$upfile</span>["error"<span>])
</span><span> 26</span><span> {
</span><span> 27</span><span>case</span> 1:
<span> 28</span><span>$res</span>["info"]="上传的文件超过了 php.ini中upload_max_filesize选项大小"<span>;
</span><span> 29</span><span>break</span><span>;
</span><span> 30</span><span>case</span> 2:
<span> 31</span><span>$res</span>["info"]="上传文件的大小超过了HTML表单中MAX_FILE_SIZE选项"<span>;
</span><span> 32</span><span>break</span><span>;
</span><span> 33</span><span>case</span> 3:
<span> 34</span><span>$res</span>["info"]="文件只有部分被上传"<span>;
</span><span> 35</span><span>break</span><span>;
</span><span> 36</span><span>case</span> 4:
<span> 37</span><span>$res</span>["info"]="没有文件被上传"<span>;
</span><span> 38</span><span>break</span><span>;
</span><span> 39</span><span>case</span> 6:
<span> 40</span><span>$res</span>["info"]="找不到临时文件夹"<span>;
</span><span> 41</span><span>break</span><span>;
</span><span> 42</span><span>case</span> 7:
<span> 43</span><span>$res</span>["info"]="文件写入失败"<span>;
</span><span> 44</span><span>break</span><span>;
</span><span> 45</span><span>default</span>:
<span> 46</span><span>$res</span>["info"]="未知错误!"<span>;
</span><span> 47</span><span>break</span><span>;
</span><span> 48</span><span> 49</span><span> }
</span><span> 50</span><span>return</span><span>$res</span><span>;
</span><span> 51</span><span> }
</span><span> 52</span><span>//</span><span>3.本次文件大小的限制</span><span> 53</span><span>if</span>(<span>$upfile</span>["size"]>1000000<span>)
</span><span> 54</span><span> {
</span><span> 55</span><span>$res</span>["info"]="上传文件过大！"<span>;
</span><span> 56</span><span>return</span><span>$res</span><span>;
</span><span> 57</span><span> }
</span><span> 58</span><span>//</span><span>4.过滤类型</span><span> 59</span><span>if</span>(!<span>in_array</span>(<span>$upfile</span>["type"],<span>$typelist</span><span>))
</span><span> 60</span><span> {
</span><span> 61</span><span>$res</span>["info"]="上传类型不符！".<span>$upfile</span>["type"<span>];
</span><span> 62</span><span>return</span><span>$res</span><span>;
</span><span> 63</span><span> }
</span><span> 64</span><span>//</span><span>5.初始化下信息（为图片产生一个随机的名字）</span><span> 65</span><span>$fileinfo</span> = <span>pathinfo</span>(<span>$upfile</span>["name"<span>]);
</span><span> 66</span><span>do</span><span> 67</span><span> {
</span><span> 68</span><span>$newfile</span> = <span>date</span>("YmdHis").<span>rand</span>(1000,9999).".".<span>$fileinfo</span>["extension"];<span>//</span><span>随机产生名字</span><span> 69</span><span> 70</span> }<span>while</span>(<span>file_exists</span>(<span>$newfile</span><span>));
</span><span> 71</span><span>//</span><span>6.执行上传处理</span><span> 72</span><span>if</span>(<span>is_uploaded_file</span>(<span>$upfile</span>["tmp_name"<span>]))
</span><span> 73</span><span> {
</span><span> 74</span><span>if</span>(<span>move_uploaded_file</span>(<span>$upfile</span>["tmp_name"],<span>$path</span>."/".<span>$newfile</span><span>))
</span><span> 75</span><span> {
</span><span> 76</span><span>//</span><span>将上传成功后的文件名赋给返回数组</span><span> 77</span><span>$res</span>["info"]=<span>$newfile</span><span>;
</span><span> 78</span><span>$res</span>["error"]=<span>true</span><span>;
</span><span> 79</span><span>return</span><span>$res</span><span>;
</span><span> 80</span> }<span>else</span><span> 81</span><span> {
</span><span> 82</span><span>$res</span>["info"]="上传文件失败!"<span>;
</span><span> 83</span><span> }
</span><span> 84</span> }<span>else</span><span> 85</span><span> {
</span><span> 86</span><span>$res</span>["info"]="不是一个上传的文件"<span>;
</span><span> 87</span><span> }
</span><span> 88</span><span>return</span><span>$res</span><span>;
</span><span> 89</span><span>}
</span><span> 90</span><span>//</span><span>==================================================</span><span> 91</span><span>/*</span><span> 92</span><span> *
</span><span> 93</span><span> * 等比缩放函数（以保存的方式实现）
</span><span> 94</span><span> * @param string $picname 被缩放的处理图片源
</span><span> 95</span><span> * @param int $maxx 缩放后的图片的最大宽度
</span><span> 96</span><span> * @param int $maxy 缩放后图片的最大高度
</span><span> 97</span><span> * @param string $pre 缩放后图片名的前缀名
</span><span> 98</span><span> * @param string 返回后的图片名称（带路径）,如a.jpg=>s_a.jpg
</span><span> 99</span><span>*/</span><span>100</span><span>function</span> imageUpdateSize(<span>$picname</span>,<span>$maxx</span>=100,<span>$maxy</span>=100,<span>$pre</span>="s_"<span>){
</span><span>101</span><span>$info</span>=<span>getimagesize</span>(<span>$picname</span>); <span>//</span><span>获取图片的基本信息</span><span>102</span><span>$w</span> = <span>$info</span>[0];<span>//</span><span>获取宽度</span><span>103</span><span>$h</span> = <span>$info</span>[1]; <span>//</span><span> 获取高度</span><span>104</span><span>switch</span>(<span>$info</span>[2<span>]){
</span><span>105</span><span>case</span> 1: <span>//</span><span>gif</span><span>106</span><span>$im</span>=imagecreatefromgif(<span>$picname</span><span>);
</span><span>107</span><span>break</span><span>;
</span><span>108</span><span>case</span> 2: <span>//</span><span>jpg</span><span>109</span><span>$im</span>=imagecreatefromjpeg(<span>$picname</span><span>);
</span><span>110</span><span>break</span><span>;
</span><span>111</span><span>case</span> 3: <span>//</span><span>png</span><span>112</span><span>$im</span>=imagecreatefrompng(<span>$picname</span><span>);
</span><span>113</span><span>break</span><span>;
</span><span>114</span><span>default</span> :
<span>115</span><span>die</span>("图片类型错误"<span>);
</span><span>116</span><span> }
</span><span>117</span><span>//</span><span>计算缩放比例</span><span>118</span><span>if</span>((<span>$maxx</span>/<span>$w</span>)>(<span>$maxy</span>/<span>$h</span><span>)){
</span><span>119</span><span>$b</span>=<span>$maxy</span>/<span>$h</span><span>;
</span><span>120</span> }<span>else</span><span>{
</span><span>121</span><span>$b</span>=<span>$maxx</span>/<span>$w</span><span>;
</span><span>122</span><span> }
</span><span>123</span><span>//</span><span>计算缩放后的尺寸</span><span>124</span><span>$nw</span>=<span>floor</span>(<span>$w</span>*<span>$b</span><span>);
</span><span>125</span><span>$nh</span>=<span>floor</span>(<span>$h</span>*<span>$b</span><span>);
</span><span>126</span><span>//</span><span>创建一个新的图像源</span><span>127</span><span>$nim</span>=imagecreatetruecolor(<span>$nw</span>,<span>$nh</span><span>);
</span><span>128</span><span>//</span><span>执行等比缩放</span><span>129</span> imagecopyresampled(<span>$nim</span>,<span>$im</span>,0,0,0,0,<span>$nw</span>,<span>$nh</span>,<span>$w</span>,<span>$h</span><span>);
</span><span>130</span><span>//</span><span>输出图像</span><span>131</span><span>$picinfo</span>=<span>pathinfo</span>(<span>$picname</span><span>);
</span><span>132</span><span>$newpicname</span>=<span>$picinfo</span>["dirname"]."/".<span>$pre</span>.<span>$picinfo</span>["basename"<span>];
</span><span>133</span><span>134</span><span>switch</span>(<span>$info</span>[2<span>]){
</span><span>135</span><span>case</span> 1:
<span>136</span> imagegif(<span>$nim</span>,<span>$newpicname</span><span>);
</span><span>137</span><span>break</span><span>;
</span><span>138</span><span>case</span> 2:
<span>139</span> imagejpeg(<span>$nim</span>,<span>$newpicname</span><span>);
</span><span>140</span><span>break</span><span>;
</span><span>141</span><span>case</span> 3:
<span>142</span> imagepng(<span>$nim</span>,<span>$newpicname</span><span>);
</span><span>143</span><span>break</span><span>;
</span><span>144</span><span>default</span>:
<span>145</span><span>echo</span> "图片压缩错误"<span>;
</span><span>146</span><span> }
</span><span>147</span><span>//</span><span>释放图片资源</span><span>148</span> imagedestroy(<span>$im</span><span>);
</span><span>149</span> imagedestroy(<span>$nim</span><span>);
</span><span>150</span><span>//</span><span>返回结果</span><span>151</span><span>return</span><span>$newpicname</span><span>;
</span><span>152</span> }
function.php
<span>1</span> <h2>商品信息管理--购物车</h2> <span>2</span> <a href="index.php">浏览商品</a>| <span>3</span> <a href="add.php">添加商品</a>| <span>4</span><span>5</span> <a href="myCart.php">我的购物车</a>| <span>6</span> <a href="clearCart.php">清空购物车</a> <span>7</span><span>8</span><span>9</span> <hr width=80%/>menu.php
<span> 1</span> <?<span>php
</span><span> 2</span><span>session_start</span>();<span>//</span><span>启动会话</span><span> 3</span><span> 4</span> ?>
<span> 5</span> <html>
<span> 6</span> <head>
<span> 7</span> <title>商品信息管理</title>
<span> 8</span> </head>
<span> 9</span> <body>
<span>10</span> <center>
<span>11</span> <?php <span>include</span>("menu.php");<span>//</span><span>导入导航栏 ?><span>12</span> <h3>添加商品到购物车<h3>
<span>13</span><span>14</span> <?<span>php
</span><span>15</span><span>//</span><span>从数据库中读取要购买的信息并添加到购物车中
</span><span>16</span><span> //1.导入配置文件</span><span>17</span><span>require</span>("dbconfig.php"<span>);
</span><span>18</span><span>//</span><span>2.连接数据库，并选择数据库</span><span>19</span><span>$link</span> = @<span>mysql_connect</span>(HOST,USER,PASS) or <span>die</span>("数据库连接失败"<span>);
</span><span>20</span><span>mysql_select_db</span>(DBNAME,<span>$link</span><span>);
</span><span>21</span><span>//</span><span>3.执行商品信息查询（获取要购买的信息）</span><span>22</span><span>$sql</span>="select * from goods where id={<span>$_GET</span>['id']}"<span>;
</span><span>23</span><span>$result</span> = <span>mysql_query</span>(<span>$sql</span>,<span>$link</span><span>);
</span><span>24</span><span>25</span><span>//</span><span>4.判断是否没有找到要购买的信息,若有就读取出要购买的信息</span><span>26</span><span>if</span>(<span>empty</span>(<span>$result</span>) || <span>mysql_num_rows</span>(<span>$result</span>)==0<span>)
</span><span>27</span><span> {
</span><span>28</span><span>die</span>("没有找到要购买的信息!"<span>);
</span><span>29</span> }<span>else</span><span>30</span><span> {
</span><span>31</span><span>$shop</span> = <span>mysql_fetch_assoc</span>(<span>$result</span><span>);
</span><span>32</span><span> }
</span><span>33</span><span>$shop</span>["num"]=1;<span>//</span><span>添加一个数量的字段
</span><span>34</span><span> //5.放入购物车中(若已存在的商品实现数量累加)</span><span>35</span><span>if</span>(<span>isset</span>(<span>$_SESSION</span>["shoplist"]{<span>$shop</span>['id'<span>]}))
</span><span>36</span><span> {
</span><span>37</span><span>//</span><span>若存在数量增加1</span><span>38</span><span>$_SESSION</span>["shoplist"][<span>$shop</span>['id']]["num"]++<span>;
</span><span>39</span> }<span>else</span><span>40</span><span> {
</span><span>41</span><span>//</span><span>若不存在，作为新购买的商品添加到购物车中</span><span>42</span><span>$_SESSION</span>["shoplist"][<span>$shop</span>['id']]=<span>$shop</span><span>;
</span><span>43</span><span> }
</span><span>44</span><span>45</span> ?>
<span>46</span> </table>
<span>47</span> </center>
<span>48</span> </body>
<span>49</span> </html>
addCart
<span> 1</span> <?<span>php
</span><span> 2</span><span>session_start</span>();<span>//</span><span>启动会话</span><span> 3</span><span> 4</span> ?>
<span> 5</span> <html>
<span> 6</span> <head>
<span> 7</span> <title>商品信息管理</title>
<span> 8</span> </head>
<span> 9</span> <body>
<span>10</span> <center>
<span>11</span> <?php <span>include</span>("menu.php");<span>//</span><span>导入导航栏 ?><span>12</span> <h3>浏览我的购物车<h3>
<span>13</span> <table border="1" width="600">
<span>14</span> <tr>
<span>15</span> <th>商品id号</th>
<span>16</span> <th>商品名称</th>
<span>17</span> <th>商品图片</th>
<span>18</span> <th>单价</th>
<span>19</span> <th>数量</th>
<span>20</span> <th>小计</th>
<span>21</span> <th>操作</th>
<span>22</span> </tr>
<span>23</span> <?<span>php
</span><span>24</span><span>$sum</span> =0;<span>//</span><span>定义总金额的变量</span><span>25</span><span>if</span>(<span>isset</span>(<span>$_SESSION</span>["shoplist"<span>])){
</span><span>26</span><span>foreach</span>(<span>$_SESSION</span>["shoplist"] <span>as</span><span>$v</span><span>)
</span><span>27</span><span> {
</span><span>28</span><span>echo</span> "<tr>"<span>;
</span><span>29</span><span>echo</span> "<td>{<span>$v</span>['id']}</td>"<span>;
</span><span>30</span><span>echo</span> "<td>{<span>$v</span>['name']}</td>"<span>;
</span><span>31</span><span>echo</span> "<td><img src='./uploads/s_{<span>$v</span>['pic']}' /></td>"<span>;
</span><span>32</span><span>echo</span> "<td>{<span>$v</span>['price']}</td>"<span>;
</span><span>33</span><span>echo</span> "<span><td align='center'>
</span><span>34</span> <button >$v</span><span>['id']}&num=-1\"'>-</button>
<span>35</span> {<span>$v</span><span>['num']}
</span><span>36</span> <button >$v</span><span>['id']}&num=+1\"'>+</button>
<span>37</span> </td>"<span>;
</span><span>38</span><span>echo</span> "<td>".(<span>$v</span>["price"]*<span>$v</span>['num'])."</td>"<span>;
</span><span>39</span><span>echo</span> "<td><a href='clearCart.php?id={<span>$v</span>['id']}'>删除</a></td>"<span>;
</span><span>40</span><span>echo</span> "</tr>"<span>;
</span><span>41</span><span>$sum</span>+=<span>$v</span>["price"]*<span>$v</span>['num'];<span>//</span><span>累计金额</span><span>42</span><span> }
</span><span>43</span><span> }
</span><span>44</span> ?>
<span>45</span> <tr>
<span>46</span> <th>总计金额:</th>
<span>47</span> <th colspan ="5" align="right"><?php <span>echo</span><span>$sum</span>; ?></th>
<span>48</span> <td> </td>
<span>49</span> </tr>
<span>50</span> </table>
<span>51</span> </center>
<span>52</span> </body>
<span>53</span> </html>
myCart.php
<span> 1</span> <?<span>php
</span><span> 2</span><span> 3</span><span>//</span><span>删除购物车session中的信息</span><span> 4</span><span>session_start</span>();<span>//</span><span>启动会话
</span><span> 5</span><span> 6</span><span> //判断是删除一个商品还是清空购物车</span><span> 7</span><span>if</span>(<span>$_GET</span>['id'<span>])
</span><span> 8</span><span> {
</span><span> 9</span><span>//</span><span>只删除一种商品</span><span>10</span><span>unset</span>(<span>$_SESSION</span>['shoplist'][<span>$_GET</span>['id'<span>]]);
</span><span>11</span> }<span>else</span><span>12</span><span> {
</span><span>13</span><span>//</span><span>清空session中的商品</span><span>14</span><span>unset</span>(<span>$_SESSION</span>["shoplist"<span>]);
</span><span>15</span><span> }
</span><span>16</span><span>17</span><span>18</span><span>//</span><span>跳转到浏览购物车界面</span><span>19</span><span>header</span>("Location:myCart.php"<span>);
</span><span>20</span> ?>
clearCart.php
<span> 1</span> <?<span>php
</span><span> 2</span><span>session_start</span>();<span>//</span><span>启动会话
</span><span> 3</span><span> //修改购物车中的信息
</span><span> 4</span><span> 5</span><span> //获取要修改的信息</span><span> 6</span><span> 7</span><span>$id</span> = <span>$_GET</span>['id'<span>];
</span><span> 8</span><span>$num</span> = <span>$_GET</span>['num'<span>];
</span><span> 9</span><span>10</span><span>//</span><span>修改商品信息</span><span>11</span><span>$_SESSION</span>["shoplist"][<span>$id</span>]["num"]+=<span>$num</span><span>;
</span><span>12</span><span>13</span><span>//</span><span>防止商品数量过小</span><span>14</span><span>if</span>(<span>$_SESSION</span>["shoplist"][<span>$id</span>]["num"]<1<span>)
</span><span>15</span><span> {
</span><span>16</span><span>$_SESSION</span>["shoplist"][<span>$id</span>]["num"]=1<span>;
</span><span>17</span><span> }
</span><span>18</span><span>//</span><span>跳转回我的购物车界面</span><span>19</span><span>header</span>("Location:myCart.php"<span>);
</span><span>20</span><span>21</span> ?>
updateCart.php The following is a screenshot of index.php:
myCart .php screenshot:
The last sentence: Hahahahahahahahahahahahahahahaha! ! ! !
The above introduces the basic example of PHP: Product Information Management System v11, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.
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