时间:2021-07-01 10:21:17 帮助过:16人阅读
数据的显示,这里就可以嵌入php来进行数据的输出
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <title>无标题文档</title>
- </head>
- <body>
- <table width="100%" border="1" cellpadding="0" cellspacing="0">
- <tr>
- <td>代号</td>
- <td>名称</td>
- <td>性别</td>
- <td>生日</td>
- <td>班级</td>
- <td>操作</td>
- </tr>
- <?php
- $db = new MySQLi("localhost","root","12345678","heiheihei");
- //连接数据库
- $sql = "select * from student ";
- //写sql语句
- $r = $db->query($sql);
- //执行sql语句返回给r
- if($r)//条件
- {
- while ($attr = $r->fetch_row())
- {
- $ssex = "";
- if($attr[2])
- {
- $ssex = "男";
- }
- else
- {
- $ssex = "女";
- }
- echo
- "
- <tr>
- <td>{$attr[0]}</td>
- <td>{$attr[1]}</td>
- <td>{$ssex}</td>
- <td>{$attr[3]}</td>
- <td>{$attr[4]}</td>
- //添加一个单击事件,防止不小心删掉
- <td><a onclick=\"return confirm('确定要删除吗???')"
- href='shanchu.php?sno={$attr[0]}'>删除</a>
- <a href='xiugai.php?sno={$attr[0]}'>修改</a> </td> </tr>"; } } ?>
- </table>
- <a href="tianjia.php" rel="external nofollow" >添加页面</a>
- </body>
- </html>
2.删除的处理页面
删除时是链接到删除处理页面的,所以还要写一个删除处理页面:
- <?php
- $aaa = $_GET ["sno"]; //删除方式使用的get,照旧
- $db = new mysqli("localhost","root","12345678","heiheihei");
- //连接...
- $sql = "delete from student WHERE sno='{$aaa}'";
- //写sql语句,sno主键
- if($db->query($sql)) //执行sql语句
- {
- header("location:text.php");
- //删完回去表页面
- }
- else{
- echo "删除失败";
- }
- ?>
来张效果图:
3.添加数据:
点击即可进入添加页面
添加页面:
- <body>
- <h1>添加</h1>
- <form action="add.php" method="post" >
- <p>代号:<input type="text" name="sno"/></p>
- <p>名字:<input type="text" name="sname"/></p>
- <p>性别: <input type="radio" value="1" name="sex" />男
- <input type="radio" value="0" name="sex"/>女</p>
- <p>日期:<input type="text" name="sbirthday"/></p>
- //创建表时性别是用的1或2来表示的,要是进行修改不知道1或2代表了什么,所以就要进行处理,处理成用户能够明白的男和女
- <p>班级:
- <select name="class">
- <?php
- $db= new MYSQLi("localhost","root","12345678","heiheihei");
- //连接...
- $sql = " select * from class ";
- //写sql...
- $r = $db->query($sql);
- //执行...返回...
- while($arr = $r->fetch_row())
- {
- echo "<option value='{$arr[0]}'>{$arr[1]}</option>";
- //添上以后回表页面
- }
- ?>
- </select>
- </p>
- <p><input type="submit" value="添加"/></p>
- </form>
- </body>
添加也需要一个处理页面来判断添加:
- <?php
- $sno = $_POST["sno"];
- //$_POST 变量用于收集来自 method="post" 的表单中的值。
- $sname = $_POST["sname"];
- $ssex = $_POST["ssex"];
- $sbirthday = $_POST["sbirthday"];
- $class = $_POST["class"];
- $db = new mysqli("localhost","root","12345678","heiheihei");
- $sql = "insert into student VALUES ('{$sno}','{$sname}','{$ssex}','{$sbirthday}','{$class}')";
- //向数据库中添加写的数据
- if($db->query($sql))
- {
- header("location:text.php");
- //header() 函数向客户端发送原始的 HTTP 报头。
- }
- else {
- echo "添加失败";
- }
- ?>
效果图:
4.修改数据:主键不可修改!!
输出的班级是不是和该人员的是否相同 if($arr[4]==$attr[0])//arr是班级名,attr是班级的代号,俩表 { echo "<option value = '{$attr[0]}' selected='selected'>{$attr[1]}</option>"; } else{ echo "<option value = '{$attr[0]}'>{$attr[1]}</option>"; } } ?> </select></p> <p><input type="submit" value="修改完毕"/></p> </form> </body> </html>
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <title>无标题文档</title>
- </head>
- <body>
- <h1>修改</h1>
- <?php
- $sno = $_GET{"sno"};
- $db = new mysqli("localhost","root","12345678","heiheihei");
- $sql = "select * from student WHERE sno='{$sno}'";
- $r = $db->query($sql);
- $arr = $r->fetch_row();
- ?>
- <form action="update.php" method="post">
- <p>代号:<input readonly="readonly" type="text" name="sno" value="<?php
- echo $arr[0];
- ?>"/></p>
- //readonly只可读
- <p>名称:<input type="text" name="sname" value="<?php echo $arr[1]; ?>"/></p> <p>性别: <input type="radio" name="ssex" value="1" <?php echo $arr[2]?"checked='checked'":""; ?>/>男 <!-- 三元运算符,如果性别=ture,默认值就在男上面,否则空--> <input type="radio" name="ssex" value="0" <?php echo $arr[2]?"":"checked='checked'"; ?>/>女 </p> <p>日期:<input type="text" name="sbirthday" value="<?php echo $arr[3]; ?>"/></p> <p>班级:<select name="class">
- //value取默认值
- <?php
- $sclass = "select * from class";
- $rclass = $db->query($sclass);
- while($attr = $rclass->fetch_row())
- //取到的班级信息
- {
- //判断将要
修改的处理页面:
- <?php
- $sno = $_POST["sno"];
- $sname = $_POST["sname"];
- $ssex = $_POST["ssex"];
- $sbirthday = $_POST["sbirthday"];
- $class = $_POST["class"];
- $db = new mysqli("localhost","root","12345678","heiheihei");
- $sql = "update student set sname='{$sname}',
- ssex='{$ssex}',
- sbirthday='{$sbirthday}',
- class='{$class}' WHERE sno='{$sno}'";
- //看一下是不是传递过来的sno值;
- if($db->query($sql))
- {
- header("location:text.php");
- }
- else{
- echo "修改失败";
- }
- ?>
修改的效果图:
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