04-19-周日_16-18-04

2026-04-19 16:18:04 +08:00
parent 1e973012c8
commit a964e97ba5
5 changed files with 933 additions and 0 deletions
--- a/课堂代码/01-blog开发/v1/users.php
+++ b/课堂代码/01-blog开发/v1/users.php
@@ -0,0 +1,98 @@
+<?php
+// 处理用户登录和注册相关的代码
+header("Content-Type: text/html; charset=UTF-8");
+
+// 连接mysql数据库
+$host = "127.0.0.1";
+$dbname = "root";
+$dbpassword = "usbw";
+$database = "blog";
+$port = 3307;
+$conn = mysqli_connect($host, $dbname, $dbpassword, $database, $port);
+if (!$conn) {
+    echo "连接失败";
+    exit;
+}
+
+
+// 先判断$_REQUEST中是否存在'login'或'register'参数，如果存在，则执行对应的操作，否则返回错误信息
+// isset 判断变量是否存在
+if (isset($_REQUEST["login"])) {
+    // 从前端接受用户名和密码，并且去数据库中验证
+    $username = $_REQUEST["username"];
+    $password = $_REQUEST["password"];
+    
+    // 写sql语句
+    $sql = "select * from users where username='$username' and password='$password'";
+    $result = mysqli_query($conn, $sql);
+
+    if (mysqli_num_rows($result) > 0) {
+        echo "登录成功";
+    }else{
+        echo "用户名或密码错误";
+    }
+
+}else if(isset($_REQUEST["register"])){
+    // 从前端获取用户名，以及两次密码输入，以及邮箱
+    $username = $_REQUEST["username"];
+    $password = $_REQUEST["password"];
+    $password2 = $_REQUEST["password2"];
+    $email = $_REQUEST["email"];
+
+    // 判断两次密码是否一致
+    if ($password != $password2) {
+        echo "两次密码不一致";
+        exit;
+    }
+
+    // 判断用户名或邮箱是否已存在
+    $sql = "select * from users where username='$username' or email='$email'";
+    $result = mysqli_query($conn, $sql);
+    if (mysqli_num_rows($result) > 0) {
+        echo "用户名或邮箱已存在";
+        exit;
+    }
+
+    // 写sql语句，插入一条新的用户记录
+    $sql = "insert into users(username, password, email) values('$username', '$password', '$email')";
+    $result = mysqli_query($conn, $sql);
+
+    // 插入成功后，返回注册成功信息
+    if ($result) {
+        echo "注册成功";
+    } else {
+        echo "注册失败";
+    }
+    
+}else{
+    echo "错误操作";
+}
+
+
+
+
+
+// // 从前端获取用户名和密码
+// $username = $_REQUEST["username"];
+// $password = $_REQUEST["password"];
+
+
+
+
+// // 查询数据库中的users表，并且将$username和$password作为条件查询
+// $sql = "select * from users where username='$username' and password='$password'";
+// $result = mysqli_query($conn, $sql);
+// if (!$result) {
+//     echo "查询失败";
+//     exit;
+// }
+
+// // 如果查询结果为空，则提示用户名或密码错误
+// if (mysqli_num_rows($result) == 0) {
+//     echo "用户名或密码错误 <a href='login.html'>返回登录页面</a>";
+//     exit;
+// }else{
+//     echo "登录成功";
+// }
+
+?>