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Heim  >  Artikel  >  Backend-Entwicklung  >  PHP-Basisbeispiel: Produktinformationsmanagementsystem v11

PHP-Basisbeispiel: Produktinformationsmanagementsystem v11

WBOY
WBOYOriginal
2016-08-08 09:23:413569Durchsuche

Ziel erreichen: Verwenden Sie PHP und MySQL, um ein Produktinformationsmanagementsystem mit Warenkorbfunktion zu schreiben

1. Erstellen Sie eine Datenbank und Tabellen

　1. Erstellen Sie eine Datenbank und Tabellen: demodb

2. Erstellen Sie eine Tabelle: Waren

Felder: Produktnummer, Produktname, Produkttyp, Produktbild, Stückpreis, Produktbeschreibung, Lagerbestand, Hinzufügungszeit

2. Erstellen Sie einen PHP-Datei-Schreibcode (im Folgenden finden Sie die zu erstellende PHP-Datei und ihren Zweck)

Add.php Seite zum Hinzufügen von Produkten

edit.php Seite zum Bearbeiten von Produktinformationen

index.php Seite zum Durchsuchen von Produktinformationen

action.php Führen Sie Vorgänge wie das Hinzufügen, Ändern und Löschen von Produktinformationen aus

dbconfig.php Öffentliche Konfigurationsdatei, Datenbankverbindungskonfigurationsinformationen

menu.php Öffentliche Navigationsleiste der Website

Uploads/ Speicherverzeichnis für hochgeladene Bilder

function.php Öffentliche Funktionsbibliotheksdatei: Hochladen von Bildinformationen, Skalierung und anderen Verarbeitungsfunktionen

addCart .php Der Vorgang des Hinzufügens von Warenkorbinformationen (Einfügen der zu kaufenden Informationen in SESSION)

MyCart.php implementiert den Suchvorgang von Warenkorbinformationen und realisiert die Statistik der Produktinformationen (Zwischensumme und Gesamtpreis). )

ClearCart.php implementiert den Vorgang des Löschens eines einzelnen Produkts oder des Löschens von Warenkorbinformationen aus dem Warenkorb

updateCart.php Ändert die Anzahl der Produkte im Warenkorb, um zu kleine Einschränkungen zu verhindern

Jedes PHP-Dateibeziehungsdiagramm:

Okay, hier ist der Codeteil:

Das erste ist die Anweisung zur Tabellenerstellung: 

<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
Anweisung zur Tabellenerstellung

Das Folgende ist der Code jeder PHP-Datei. Freunde, die ihn benötigen Kopieren Sie jeden Code direkt und legen Sie ihn im selben Verzeichnis ab. Ja, Sie müssen auch einen Upload-Ordner im selben Verzeichnis erstellen, um hochgeladene Bilder zu speichern 

<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

folgender Screenshot von index.php:

Screenshot von myCart.php:

Abschließend möchte ich sagen: Hahahahahahaha Hahahahahahaha! ! ! !

Das Obige stellt das grundlegende Beispiel von PHP: Product Information Management System v11 vor, einschließlich der relevanten Inhalte. Ich hoffe, es wird für Freunde hilfreich sein, die sich für PHP-Tutorials interessieren.

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