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🗣 Wd提问: php分页权限

🤖 Ai回答:
我来为您详细介绍PHP分页权限的实现方法。

1、基础分页权限设计

权限控制类
php
<?php
class Permission {
private $user;

public function __construct($user) {
$this-user = $user;
}

/
* 检查用户是否有访问权限
*/
public function hasPermission($permission) {
// 检查用户角色是否包含该权限
return in_array($permission, $this-user['permissions']);
}

/
* 获取用户可访问的数据范围
*/
public function getDataScope() {
return $this-user['data_scope'] ?? 'all';
}
}
?

分页类
php
<?php
class Pagination {
private $currentPage;
private $perPage;
private $total;
private $totalPages;
private $offset;

public function __construct($currentPage = 1, $perPage = 10) {
$this-currentPage = max(1, (int)$currentPage);
$this-perPage = max(1, (int)$perPage);
$this-offset = ($this-currentPage 1) * $this-perPage;
}

public function setTotal($total) {
$this-total = (int)$total;
$this-totalPages = ceil($this-total / $this-perPage);
return $this;
}

public function getOffset() {
return $this-offset;
}

public function getCurrentPage() {
return $this-currentPage;
}

public function getTotalPages() {
return $this-totalPages;
}

public function getLimit() {
return $this-perPage;
}

public function getPaginationInfo() {
return [
'current_page' = $this-currentPage,
'per_page' = $this-perPage,
'total' = $this-total,
'total_pages' = $this-totalPages,
'offset' = $this-offset
];
}
}
?

2、完整的分页权限示例

数据库模型类
php
<?php
class User {
private $pdo;

public function __construct($pdo) {
$this-pdo = $pdo;
}

/**
* 获取用户列表（带权限控制）
*/
public function getUsersWithPermission($page = 1, $limit = 10, $userPermissions = []) {
$permission = new Permission($userPermissions);

// 检查权限
if (!$permission-hasPermission('user:view')) {
throw new Exception('权限不足');
}

// 创建分页对象
$pagination = new Pagination($page, $limit);

// 构建查询条件
$whereClause = '';
$params = [];

// 根据用户权限过滤数据
$dataScope = $permission-getDataScope();
switch ($dataScope) {
case 'own':
// 只查看自己的数据
$whereClause = 'WHERE created_by = :user_id';
$params[':user_id'] = $userPermissions['id'];
break;
case 'department':
// 查看部门数据
$whereClause = 'WHERE department_id = :dept_id';
$params[':dept_id'] = $userPermissions['department_id'];
break;
default:
// 查看所有数据
$whereClause = '';
}

// 获取总数
$countSql = SELECT COUNT(*) FROM users {$whereClause};
$countStmt = $this-pdo-prepare($countSql);
$countStmt-execute($params);
$total = $countStmt-fetchColumn();

$pagination-setTotal($total);

// 获取数据
$sql = SELECT * FROM users {$whereClause} ORDER BY created_at DESC LIMIT :limit OFFSET :offset;
$stmt = $this-pdo-prepare($sql);
$stmt-bindValue(':limit', $pagination-getLimit(), PDO::PARAM_INT);
$stmt-bindValue(':offset', $pagination-getOffset(), PDO::PARAM_INT);

foreach ($params as $key = $value) {
$stmt-bindValue($key, $value);
}

$stmt-execute();
$users = $stmt-fetchAll(PDO::FETCH_ASSOC);

return [
'data' = $users,
'pagination' = $pagination-getPaginationInfo()
];
}
}
?

3、控制器实现

php
<?php
// index.php
session_start();

try {
// 模拟用户信息
$user = [
'id' = 1,
'username' = 'admin',
'permissions' = ['user:view', 'user:edit'],
'data_scope' = 'all'
];

// 初始化数据库连接
$pdo = new PDO('mysql:host=localhost;dbname=test', 'username', 'password');
$pdo-setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

// 获取分页参数
$page = $_GET['page'] ?? 1;
$limit = $_GET['limit'] ?? 10;

// 创建用户管理类
$userManager = new User($pdo);

// 获取用户数据
$result = $userManager-getUsersWithPermission($page, $limit, $user);

// 返回JSON响应
header('Content-Type: application/json');
echo json_encode([
'success' = true,
'data' = $result['data'],
'pagination' = $result['pagination']
]);

} catch (Exception $e) {
header('Content-Type: application/json');
http_response_code(403);
echo json_encode([
'success' = false,
'message' = $e-getMessage()
]);
}
?

4、前端展示示例

html
<!DOCTYPE html
<html
<head
<title用户管理</title
<style
.pagination {
text-align: center;
margin: 20px 0;
}
.pagination a, .pagination span {
padding: 8px 12px;
margin: 0 4px;
text-decoration: none;
border: 1px solid ddd;
}
.pagination .active {
background-color: 007bff;
color: white;
}
</style
</head
<body
<h1用户列表</h1
<div id=user-list
<! 用户列表将通过AJAX加载
</div
<div id=pagination class=pagination
<! 分页控件
</div

<script
class UserManager {
constructor() {
this.currentPage = 1;
this.limit = 10;
}

async loadUsers(page = 1) {
try {
const response = await fetch(`index.php?page=${page}&limit=${this.limit}`);
const data = await response.json();

if (data.success) {
this.displayUsers(data.data);
this.displayPagination(data.pagination);
} else {
alert('加载失败：' + data.message);
}
} catch (error) {
console.error('Error:', error);
}
}

displayUsers(users) {
const container = document.getElementById('user-list');
let html = '<table border=1<tr<thID</th<th用户名</th<th创建时间</th</tr';

users.forEach(user = {
html += `<tr
<td${user.id}</td
<td${user.username}</td
<td${user.created_at}</td
</tr`;
});

html += '</table';
container.innerHTML = html;
}

displayPagination(pagination) {
const container = document.getElementById('pagination');
let html = '';

// 上一页
if (pagination.current_page 1) {
html += `<a href= onclick=userManager.loadUsers(${pagination.current_page 1})上一页</a`;
}

// 页码
for (let i = 1; i <= pagination.total_pages; i++) {
if (i === pagination.current_page) {
html += `<span class=active${i}</span`;
} else {
html += `<a href= onclick=userManager.loadUsers(${i})${i}</a`;
}
}

// 下一页
if (pagination.current_page < pagination.total_pages) {
html += `<a href= onclick=userManager.loadUsers(${pagination.current_page + 1})下一页</a`;
}

container.innerHTML = html;
}
}

const userManager = new UserManager();
userManager.loadUsers();
</script
</body
</html

5、高级权限控制

多层级权限系统
php
<?php
class AdvancedPermission {
private $user;
private $rolePermissions;

public function __construct($user) {
$this-user = $user;
$this-loadRolePermissions();
}

private function loadRolePermissions() {
// 从数据库或配置文件加载

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