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@@ -0,0 +1,394 @@
+#                           作业 
+
+```mysql
+// mysql
+
+create database qianshou charset utf8;
+use qianshou;
+create table user(
+	username varchar(10) not null,
+    password varchar(20) not null,
+	sex varchar(2) not null,
+	height double not null,
+	hobby varchar(20) not null,
+	age int not null,
+	address varchar(50),
+	phone int not null,
+	photo binary,
+	aboutme varchar(50)
+)
+```
+
+
+
+```php
+// 文件名：conn
+
+<?php
+
+//连接MySQL
+error_reporting(E_ALL ^ E_WARNING);
+$conn=mysqli_connect('localhost','root','root','qianshou') or die("失败");
+mysqli_query($conn,'set names utf8');
+```
+
+```php
+// 文件名：index
+
+<?php
+
+// 主页
+// 连服务器
+$conn =mysqli_connect('localhost','root','root','qianshou') or die("服务器连接失败！");
+// 设置字符utf8
+mysqli_query($conn,'set names utf8');
+include_once('conn.php');// 包含数据库文件
+$sql = "select * from `user` order by phone";//
+$result = mysqli_query($conn,$sql);
+session_start();
+$username="admin";
+$user=$username=$_SESSION['username']?:$_COOKIE['username']=$_SESSION['username'];
+if (isset($username) && $username=="admin"){
+    echo "牵手首页";
+    echo "欢迎您：".$username;
+    echo " <a href='register.php'>注销</a>";
+}else{
+    echo "你还没有登录!   <a href='login.php'>马上去登录</a> ";
+}
+?>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>牵手网</title>
+    <script>
+        function del(){
+            if (!window.confirm("确定删除？")){
+                return false;
+            }
+        }
+    </script>
+</head>
+<body>
+<h1>牵手网-首页</h1>
+<table border="2"  width="900">
+    <tr align="center">
+        <th>用户名</th>
+        <th>密码</th>
+        <th>性别</th>
+        <th>身高</th>
+        <th>爱好</th>
+        <th>年龄</th>
+        <th>住址</th>
+        <th>手机号码</th>
+        <th>头像</th>
+        <th>交友宣言</th>
+        <th>操作</th>
+
+
+
+
+    </tr>
+    <?php
+    if (!mysqli_num_rows($result)){
+        echo "<tr align='center'><td colspan='10'> 暂无数据！</td></tr>";
+    }else{
+        while ($row=mysqli_fetch_assoc($result)){
+            ?>
+            <tr align="center">
+                <td><?php echo $row['username']?></td>
+                <td><?php echo $row['password']?></td>
+                <td><?php echo $row['sex']?></td>
+                <td><?php echo $row['height']?></td>
+                <td><?php echo $row['hobby']?></td>
+                <td><?php echo $row['age']?></td>
+                <td><?php echo $row['address']?></td>
+                <td><?php echo $row['phone']?></td>
+                <td><?php echo $row['photo']?></td>
+                <td><?php echo $row['aboutme']?></td>
+
+
+                <td><a href="edit.php?username=<?php echo $row['username'] ?>">修改</a>
+                    <a href="delete.php?username=<?php echo $row['username'] ?>" onclick="return del();">删除</a></td>
+
+
+            </tr>
+            <?php
+        }
+    }
+    ?>
+
+
+</table>
+</body>
+</html>
+
+
+
+
+
+```
+
+```php
+// 用户注销页:register
+
+<?php
+
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>用户注册</title>
+    <script>
+        function check() {
+            if (myform.username.value === '' ||
+                myform.password1.value==='' ||
+                myform.password2.value==='' ||
+                myform.sex.value==='' ||
+                myform.age.value===''||
+                myform.height.value==='' ||
+                myform.phone.value===''
+
+
+            ) {
+                alert("你还没填写完！请检查后再提交！");
+                return false;
+            }
+            if (myform.password1.value!=myform.password2.value) {
+                alert("两次填写的密码不一致！请检查后再提交！");
+                return false;
+            }
+            var  hobbys=document.getElementsByName("hobby[]");
+            var  flag=false;
+            for (var i=0;i<hobbys.length;i++) {
+                if (hobbys[i].checked){
+                    flag=true;
+                    break;
+                }
+            }
+            if (!flag){
+                alert("爱好至少选一项！");
+                return false;
+            }
+        }
+
+    </script>
+
+</head>
+<body>
+
+<h1>用户注册</h1>
+<form action="register_do.php" methor="post" enctype="multipart/form-data">
+    <table border="1" width="500">
+        <tr><th>用户名：</th><td><input type="text" name="username"></td></tr>
+        <tr><th>密码：</th><td><input type="password" name="password1"></td></tr>
+        <tr><th>再次密码：</th><td><input type="password" name="password2"></td></tr>
+        <tr><th>性别：</th><td><input type="radio" name="sex" value="1">男 <input type="radio" name="sex" value="0">女</td></tr>
+        <tr><th>身高：</th><td><input type="text" name="height"></td></tr>
+        <tr><th>爱好：</th><td>
+                <input type="checkbox" name="hobby[]" value="运动" class="hobby">运动
+                <input type="checkbox" name="hobby[]" value="音乐" class="hobby">音乐
+                <input type="checkbox" name="hobby[]" value="游戏" class="hobby">游戏
+                <input type="checkbox" name="hobby[]" value="电影" class="hobby">电影
+                <input type="checkbox" name="hobby[]" value="旅游" class="hobby">旅游
+                <input type="checkbox" name="hobby[]" value="美食" class="hobby">美食
+
+            </td></tr>
+        <tr><th>年龄：</th><td><input type="text" name="age"></td></tr>
+        <tr><th>地址：</th><td><input type="text" name="username"></td></tr>
+        <tr><th>手机号码：</th><td><input type="text" name="phone"></td></tr>
+        <tr><th height="100">上传头像：</th><td><input type="file" name="photo"></td></tr>
+        <tr><th>交友宣言：</th><td><input type="text" name="aboutme"></td></tr>
+        <tr><td colspan="2" align="center"> <input type="submit" name="提交" onclick="return check()">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <input type="reset" name="取消"></td></tr>
+
+    </table>
+
+</form>
+</body>
+</html>
+```
+
+```php
+// 文件名：register_do
+
+<?php
+// 注册验证
+
+foreach ($_POST as $key =>$value){
+    if ($key!='提交'){
+        $$key=$value;
+    }
+}
+session_start();
+unset($_SESSION['username']);
+$conn=mysqli_connect('localhost','root','root','qianshou') or die("失败");
+mysqli_query($conn,'set names utf8');
+setcookie('name', time() - 1);
+$sql = "insert into user values ('$username','$password1','$sex','$height','$hobby','$age','$address','$phone','$aboutme')";
+$result=mysqli_query($conn,$sql);
+
+if($result){
+    echo "注册成功!<a href='login.php'>请登录！</a>";
+}else{
+    die("注册失败。".mysqli_error($conn));
+}
+
+?>
+<a href="index.php">返回首页</a>
+
+```
+
+```php
+// 文件名：login
+<?php
+?>
+// 用户登录
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>用户登录</title>
+</head>
+<body>
+<h1>用户登录</h1>
+<form action="login_do.php" method="post">
+<table>
+        <tr><th>用户：</th><td><input type="text" name="username"></td></tr>
+        <tr><th>密码：</th><td><input type="password" name="password"></td></tr>
+        <tr><td  colspan="2" align="center"><input type="submit" name="submit" value="登录"<a href="index.php"> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type="button" name="submit" value="注册" <a href="register_do.php"></td></tr>
+
+</table>
+</form>
+</body>
+</html>
+
+
+```
+
+```php
+// 文件名：login_do
+<?php
+// 登录验证
+
+$username='admin';
+$password='123456';
+if ($_POST['username']==$username && $_POST['password']==$password){
+    echo "登录成功！";
+    $_SESSION['username']=$username;
+    header('location:index.php');
+}else{
+    die("登录失败！");
+}
+```
+
+```php
+// 文件名：edit.修改页
+
+<?php
+// 包含数据库连接文件
+//include_once('./conn.php');
+if (!isset($_GET['username'])){
+    die("非法访问");
+}
+
+// 定义要执行sql语句。
+$username = $_GET['username'];
+$sql=" select * from user where username=$username";
+if (!empty($conn)) {
+    $result=mysqli_query($conn, $sql);
+}
+$row=mysqli_fetch_assoc($result);
+?>
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>修改学生信息</title>
+</head>
+<body>
+<h1>修改信息</h1>
+<form action="update.php" method="post">
+    <table border="1" width="600">
+
+
+        <tr>
+            <th>联系方式</th><td><input type="text" name="phone" value="<?php echo $row['phone'] ?>"></td>
+        </tr>
+        <tr>
+            <th>修改头像</th><td><input type="file" name="photo" value="<?php echo $row['photo'] ?>"></td>
+        </tr>
+        <input type="text" name="username" value="<?php echo $row['username'] ?>" hidden>
+        <tr>
+            <td colspan="2" align="center"><input type="submit" name='submit' value="提交">&nbsp;&nbsp;&nbsp;<input type="reset" value="取消"></td>
+
+
+        </tr>
+    </table>
+    <a href="index.php">返回</a>
+
+</body>
+</html>
+
+```
+
+```php
+// 文件名：delete
+<?php
+
+// 包含数据库连接文件
+
+include_once('conn.php');
+$username=$_GET['username'];
+// 定义要执行sql语句。
+$sql = "delete from user where username=$username";
+// 执行sql语句操作
+if (!empty($conn)) {
+    $ret = mysqli_query($conn,$sql);
+}
+if($ret){
+    echo "删除成功！<a href='./index.php'>返回首页</a>";
+}else{
+    echo "删除失败！";
+}
+```
+
+```php
+<?php
+// 修改验证
+    
+// 包含数据库连接文件
+include_once('conn.php');
+if (!isset($_POST['submit'])) {
+    die("非法访问");
+}
+$phone = $_POST['phone'];
+$photo = $_POST['photo'];
+
+// 定义要执行sql语句。
+$sql = "update user set phone='$phone',photo=$photo  where username=$'username'";
+// 执行sql语句操作
+if (!empty($conn)) {
+    $ret = mysqli_query($conn, $sql);
+}
+if ($ret) {
+    echo "修改成功！<a href='./index.php'>返回首页</a>";
+} else {
+    echo "修改失败！";
+}
+```
+
+```php
+// logout
+<?php
+// 注销页
+session_start();
+unset($_SESSION['username']);
+setcookie('username',time()-1);
+echo  "注销成功！";
+?>
+<a href="index.php">返回首页</a>
+```
+

用户名：
密码：
再次密码：
性别：	男女
身高：
爱好：	+ 运动 + 音乐 + 游戏 + 电影 + 旅游 + 美食 + +
年龄：
地址：
手机号码：
上传头像：
交友宣言：