php登录页面：
<h1>登录界面</h1> <form action="dengluchuli.php" method="post"> 用户名：<input type="text" name="uid"/> 密码：<input type="text" name="pwd"/> <input type="submit" value="登录" /> </form>
其中 dengluchuli.php在规定路径下。
登录跳转页面：
<?php
$yonghuming = $_POST["uid"];
$mima = $_POST["pwd"];
$db = new mysqli("localhost","root","","12345");
$sql = "select password from login where username='{$yonghuming}'";
$result = $db->query($sql);
$atter = $result->fetch_row();
if($atter[0]==$mima && !empty($mima))
{
header("location:xinxi.php");
}
else
{
echo "用户名或密码错误";
}
?>
此页面用于登录界面登录成功后通过用户名找到相应的数据。
登录主界面：
<?php
$de = new mysqli("localhost","root","","12345");
$e="select * from info";
$result = $de->query($e);
$atter = $result->fetch_all();
echo "<table border=1>";
echo "<tr>
<td>代号</td>
<td>姓名</td>
<td>性别</td>
<td>民族</td>
<td>出生日期</td>
<td>操作</td>
</tr> ";
for($i=0;$i<count($atter);$i++)
{
echo "<tr>";
for($j=0;$j<count($atter[$i]);$j++)
{
if($j==4)
{
echo "<td>".$atter[$i][$j]."</td> <td><a href='shanchu.php?code={$atter[$i][1]}' onclick="return confirm('确定删除？')"> 删除</a></td>";
}
else
{
echo "<td>".$atter[$i][$j]."</td>";
}
}
echo "</tr>";
}
echo " </table>";
echo "<a href='tianjia.php'>添加数据</a>"
?>
添加数据（tianji.php）：
<h1>添加数据</h1> <form action="zeng.php" method="post"> 代号：<input type="text" name="daihao" /> <br /> 姓名：<input type="text" name="xinming" /><br /> 性别：<input type="text" name="xinbie" /><br /> 民族：<input type="text" name="minzu" /><br /> 生日：<input type="text" name="shengri" /><br /> <input type="submit" value="提交"/> </form>
zeng.php ：
<?php
$code = $_POST["daihao"];
$name = $_POST["xinming"];
$sex = $_POST["xinbie"];
$nation = $_POST["minzu"];
$birthday = $_POST["shengri"];
$db = new mysqli("localhost","root","","12345");
$sql = "insert into info values('{$code}','{$name}','{$sex}','{$nation}','{$birthday}')";
$r = $db->query($sql);
if($r)
{
header("location:xinxi.php");
}
else
{
echo "添加失败";
}
?>
添加成功：
shanchu.php
<?php
$name = $_GET["code"];
$db = new mysqli("localhost","root","","12345");
$sql = "delete from info where name='{$name}'";
$result = $db->query($sql);
if($result)
{
header("location:xinxi.php");
}
else
{
echo "删除失败";
}
?>
修改数据：
在xinxi.php文件中插入代码：
<a href='xiugai.php?code={$atter[$i][1]}'>修改</a>
相同路径下新建xiugai.php
<?php
$name = $_GET["code"];
$db = new mysqli("localhost","root","","12345");
$sql = "select * from info where name='{$name}'";
$r = $db->query($sql);
$atter = $r->fetch_row();
?>
<h1>修改</h1>
<form action="xiugaichuli.php" method="post">
<input type="hidden" name="daihao" value="<?php echo $atter[0]; ?>" /> <br />
姓名： <input type="text" name="xinming" value="<?php echo $atter[1]; ?>"/> <br />
性别： <input type="text" name="xinbie" value="<?php echo $atter[2]; ?>"/> <br />
民族： <input type="text" name="minzu" value="<?php echo $atter[3]; ?>"/> <br />
生日： <input type="text" name="shengri" value="<?php echo $atter[4]; ?>"/> <br />
<input type="submit" value="修改" />
</form>
相同路径下新建xiugaichuli.php
<?php
$code = $_POST["daihao"];
$name = $_POST["xinming"];
$sex = $_POST["xinbie"];
$nation = $_POST["minzu"];
$birthday = $_POST["shengri"];
$db = new mysqli("localhost","root","","12345");
$sql = "update info set name='{$name}',sex={$sex},nation='{$nation}',birthday='{$birthday}' where code='{$code}'";
$r = $db->query($sql);
if($r)
{
header("location:xinxi.php");
}
else
{
echo "修改失败";
}
?>
点击修改其中一条数据：
修改成功。