我的系统中已有管理员登录系统。但现在我需要添加多个页面，这些页面只能由＆＃34;超级管理员＆＃34; 访问。我需要以不同的方式重定向它们。我卡在某个地方。需要帮助才能搞清楚。
以下是代码：
Login.php持有主逻辑
<?php
/**
* Class login
* handles the user's login and logout process
*/
class Login
{
/**
* @var object The database connection
*/
private $db_connection = null;
/**
* @var array Collection of error messages
*/
public $errors = array();
/**
* @var array Collection of success / neutral messages
*/
public $messages = array();
/**
* the function "__construct()" automatically starts whenever an object of this class is created,
* you know, when you do "$login = new Login();"
*/
public function __construct()
{
// create/read session, absolutely necessary
session_start();
// check the possible login actions:
// if user tried to log out (happen when user clicks logout button)
if (isset($_GET["logout"])) {
$this->doLogout();
}
// login via post data (if user just submitted a login form)
elseif (isset($_POST["login"])) {
$this->dologinWithPostData();
}
}
/**
* log in with post data
*/
private function dologinWithPostData()
{
// check login form contents
if (empty($_POST['user_name'])) {
$this->errors[] = "Username field was empty.";
} elseif (empty($_POST['user_password'])) {
$this->errors[] = "Password field was empty.";
} elseif (!empty($_POST['user_name']) && !empty($_POST['user_password'])) {
// create a database connection, using the constants from config/db.php (which we loaded in index.php)
$this->db_connection = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
// change character set to utf8 and check it
if (!$this->db_connection->set_charset("utf8")) {
$this->errors[] = $this->db_connection->error;
}
// if no connection errors (= working database connection)
if (!$this->db_connection->connect_errno) {
// escape the POST stuff
$user_name = $this->db_connection->real_escape_string($_POST['user_name']);
// database query, getting all the info of the selected user (allows login via email address in the
// username field)
//$sql = "SELECT user_name, user_email, user_password_hash
// FROM users1
// WHERE user_name = '" . $user_name . "' OR user_email = '" . $user_name . "';";
$sql = "SELECT * FROM users
WHERE username = '" . $user_name . "' OR uemail = '" . $user_name . "';";
$result_of_login_check = $this->db_connection->query($sql);
// if this user exists
if ($result_of_login_check->num_rows == 1) {
// get result row (as an object)
$result_row = $result_of_login_check->fetch_object();
// using PHP 5.5's password_verify() function to check if the provided password fits
// the hash of that user's password
//if (password_verify($_POST['user_password'], $result_row->user_password_hash)) {
if ($_POST['user_password'] == $result_row->password) {
// write user data into PHP SESSION (a file on your server)
$_SESSION['user_name'] = $result_row->username;
$_SESSION['user_email'] = $result_row->uemail;
$_SESSION['user_login_status'] = 1;
$_SESSion['user_role'] = $result_row->role;
} else {
$this->errors[] = "Wrong password. Try again.";
}
} else {
$this->errors[] = "This user does not exist.";
}
} else {
$this->errors[] = "Database connection problem.";
}
}
}
/**
* perform the logout
*/
public function doLogout()
{
// delete the session of the user
$_SESSION = array();
session_destroy();
// return a little feeedback message
$this->messages[] = "You have been logged out.";
}
/**
* simply return the current state of the user's login
* @return boolean user's login status
*/
public function isUserLoggedIn()
{
if (isset($_SESSION['user_login_status']) AND $_SESSION['user_login_status'] == 1) {
return true;
}
// default return
return false;
}
// Check if user is a Super Admin
public function isSuperUser()
{
if (isset($_SESSION['user_role']) AND $_SESSION['user_role'] == "admin"){
return true;
}
// default return
return false;
}
}
index.php具有重定向信息
<?php
/**
* A simple, clean and secure PHP Login Script / MINIMAL VERSION
*
* Uses PHP SESSIONS, modern password-hashing and salting and gives the basic functions a proper login system needs.
*
* @author Panique
* @link https://github.com/panique/php-login-minimal/
* @license http://opensource.org/licenses/MIT MIT License
*/
// checking for minimum PHP version
if (version_compare(PHP_VERSION, '5.3.7', '<')) {
exit("Sorry, Simple PHP Login does not run on a PHP version smaller than 5.3.7 !");
} else if (version_compare(PHP_VERSION, '5.5.0', '<')) {
// if you are using PHP 5.3 or PHP 5.4 you have to include the password_api_compatibility_library.php
// (this library adds the PHP 5.5 password hashing functions to older versions of PHP)
require_once("libraries/password_compatibility_library.php");
}
// include the configs / constants for the database connection
require_once("config/db.php");
// load the login class
require_once("classes/Login.php");
// create a login object. when this object is created, it will do all login/logout stuff automatically
// so this single line handles the entire login process. in consequence, you can simply ...
$login = new Login();
// ... ask if we are logged in here:
if ($login->isUserLoggedIn() == true) {
// the user is logged in. you can do whatever you want here.
// for demonstration purposes, we simply show the "you are logged in" view.
if ($login->isSuperUser() == true) {
include("views/su_logged_in.php");
}else{
include("views/logged_in.php");
}
} else {
// the user is not logged in. you can do whatever you want here.
// for demonstration purposes, we simply show the "you are not logged in" view.
include("views/not_logged_in.php");
}
?>
我的用户表格如下：
| Uid | uname | name | uemail | password | role |
我不是为了角色分离表。我确实检查过超级管理员，角色列的字符串值为admin。
我需要超级管理员才能看到重定向到su_logged_in.php。我尝试与$_SESSION进行交涉，但我猜错了。
我将不胜感激任何帮助。
非常感谢你提前。
答案 0 :(得分：1)
可能是你的login.php中的小故障
public function isSuperUser()
{
// here you are comparing $_SESSION['user_role'] == "admin",
// question arise here how you are saving user_role in user table , a user role ID or user role string like "admin"
// if its string , then your code is clean
// if it role ID then, compare with super user role ID like below comment
// if (isset($_SESSION['user_role']) AND $_SESSION['user_role'] == 1){
if (isset($_SESSION['user_role']) AND trim($_SESSION['user_role']) == "admin"){
return true;
}
// default return
return false;
}
在login.php中出现更多错误，
if ($_POST['user_password'] == $result_row->password) {
// write user data into PHP SESSION (a file on your server)
$_SESSION['user_name'] = $result_row->username;
$_SESSION['user_email'] = $result_row->uemail;
$_SESSION['user_login_status'] = 1;
$_SESSION['user_role'] = $result_row->role; // here was SESSION case issue
}