授权查询php

<?php
session_start();

// 假设用户登录后，将角色信息存储在Session中
$_SESSION['user_role'] = 'admin';

// 检查用户角色
if ($_SESSION['user_role'] === 'admin') {
    // 允许访问
    echo "Access granted!";
} else {
    // 拒绝访问
    echo "Access denied!";
}
?>

<?php
session_start();

if (!isset($_SESSION['user_role'])) {
    header('Location: login.php');
    exit();
}

if ($_SESSION['user_role'] !== 'admin') {
    header('HTTP/1.1 403 Forbidden');
    echo "Access denied!";
    exit();
}
?>

<?php
require 'vendor/autoload.php';

use Firebase\JWT\JWT;

$key = 'your_secret_key';

// 生成JWT
$token = [
    'user_id' => 1,
    'user_role' => 'admin',
    'exp' => time() + (60*60) // 过期时间
];

$jwt = JWT::encode($token, $key);

// 验证JWT
try {
    $decoded = JWT::decode($jwt, $key, ['HS256']);
    if ($decoded->user_role === 'admin') {
        echo "Access granted!";
    } else {
        echo "Access denied!";
    }
} catch (Exception $e) {
    echo "Invalid token!";
}
?>