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08-12-周三_16-44-56

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AaronXu
2026-08-12 16:44:57 +08:00
parent 56dd5b5adf
commit 460e9c7393
12 changed files with 1047 additions and 304 deletions
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03.数据库/03.数据库开发项目代码示例/01.笔记网站/function/user.php
+34 -3
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@@ -5,6 +5,7 @@ $action = $data['action'] ?? '';
// 处理与用户相关的操作
include 'db.php';
session_start();
// 如果数据库连接失败，则返回错误信息
/** @var mysqli $conn */
@@ -16,7 +17,7 @@ if (!isset($conn)) {
// 测试用户名是否已存在
function testUsername(mysqli $conn, string $username): bool
{
$sql = "select * from users where username = '$username'"; // sql注入风险
$sql = "select * from users where username = '$username' and status = 1"; // sql注入风险
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
return true;
@@ -30,15 +31,16 @@ if ($action == 'register') {
$username = $data['username'];
$password = $data['password'];
$email = $data['email'];
$role = isset($data['role']) ? $data['role'] : 'user';
if (testUsername($conn, $username)) {
echo json_encode(['code' => 10001, 'status' => 'error', 'message' => '用户名已存在']);
} else {
$sql = "insert into users (username, password, email) values ('$username', '$password', '$email')";
$sql = "insert into users (username, password, email, role) values ('$username', '$password', '$email', '$role')";
$result = mysqli_query($conn, $sql);
if ($result) {
echo json_encode(['code' => 0, 'status' => 'success', 'message' => '注册成功']);
} else {
echo json_encode(['code' => 10002, 'status' => 'error', 'message' => '注册失败']);
echo json_encode(['code' => 10002, 'status' => 'error', 'message' => '注册失败', 'sql'=>$sql]);
}
}
}
@@ -51,7 +53,36 @@ if ($action == 'login') {
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
echo json_encode(['code' => 0, 'status' => 'success', 'message' => '登录成功']);
$_SESSION['username'] = $username;
} else {
echo json_encode(['code' => 10003, 'status' => 'error', 'message' => '用户名或密码错误']);
}
}
// delete的逻辑
if ($action == 'delete') {
$id = $data['id'];
$sql = "update users set status = 0 where id = $id";
$result = mysqli_query($conn, $sql);
if ($result) {
echo json_encode(['code' => 0, 'status' => 'success', 'message' => '删除成功']);
} else {
echo json_encode(['code' => 10005, 'status' => 'error', 'message' => '删除失败']);
}
}
// update的逻辑
if ($action == 'update') {
$id = $data['id'];
$username = $data['username'];
$email = $data['email'];
$role = $data['role'];
$sql = "update users set username = '$username', email = '$email', role = '$role' where id = $id";
$result = mysqli_query($conn, $sql);
if ($result) {
echo json_encode(['code' => 0, 'status' => 'success', 'message' => '更新成功']);
} else {
echo json_encode(['code' => 10006, 'status' => 'error', 'message' => '更新失败']);
}
}