密码保护拒绝对某些文件的访问

Question

我正在尝试设置密码保护以用于某些文件。我遵循了在线教程，并取得了一些成功，但在其他情况下，尽管执行的操作似乎完全相同，但仍不断收到拒绝访问页面的调用。

从我的登录页面，登录脚本调用 php 登录页面，该页面应存储会话 ID。然后，我有一个单独的页面来检查会话 ID 是否已存储，并且该页面（称为 auth.php）包含在我试图保护的页面中。我将 php 代码放在文件的最开头，正如我所说，对于某些测试页面它可以工作，但对于我需要它的页面，它会恢复到拒绝访问页面，这对我来说意味着它没有识别出会话 ID 已被存储。我没有收到任何与连接问题相关的错误消息，因此我的重点是会话 ID 问题。任何想法将不胜感激。

包含代码：

<?php
require_once('auth.php');
?>

auth.php 代码：

<?php
//Check whether the session variable SESS_MEMBER_ID is present or not
if(!isset($_SESSION['SESS_MEMBER_ID']) || (trim($_SESSION['SESS_MEMBER_ID']) == '')) {
    header("location: access-denied.php");
    exit();
}
  ?>

登录脚本代码的相关部分：

//Create query
$qry="SELECT * FROM members WHERE login='$login' AND password='".md5($_POST['password'])."'";
$result=mysql_query($qry);

//Check whether the query was successful or not
if($result) {
    if(mysql_num_rows($result) == 1) {
        //Login Successful
        session_regenerate_id();
        $member = mysql_fetch_assoc($result);
        $_SESSION['SESS_MEMBER_ID'] = $member['member_id'];
        $_SESSION['SESS_FIRST_NAME'] = $member['firstname'];
        $_SESSION['SESS_LAST_NAME'] = $member['lastname'];
        session_write_close();
        header("location: member-index.php");
        exit();
    }else {
        //Login failed
        header("location: login-failed.php");
        exit();
    }
}else {
    die("Query failed");
}

完整登录代码：

<?php
//Start session
session_start();

//Include database connection details
require_once('config.php');

//Array to store validation errors
$errmsg_arr = array();

//Validation error flag
$errflag = false;


//Function to sanitize values received from the form. Prevents SQL injection
function clean($str) {
    $str = @trim($str);
    if(get_magic_quotes_gpc()) {
        $str = stripslashes($str);
    }
    return mysql_real_escape_string($str);
}

//Sanitize the POST values
$login = clean($_POST['login']);
$password = clean($_POST['password']);

//Input Validations
if($login == '') {
    $errmsg_arr[] = 'Login ID missing';
    $errflag = true;
}
if($password == '') {
    $errmsg_arr[] = 'Password missing';
    $errflag = true;
}

//If there are input validations, redirect back to the login form
if($errflag) {
    $_SESSION['ERRMSG_ARR'] = $errmsg_arr;
    session_write_close();
    header("location: login-form.php");
    exit();
}

//Create query
$qry="SELECT * FROM members WHERE login='$login' AND password='".md5($_POST['password'])."'";
$result=mysql_query($qry);

//Check whether the query was successful or not
if($result) {
    if(mysql_num_rows($result) == 1) {
        //Login Successful
        session_regenerate_id();
        $member = mysql_fetch_assoc($result);
        $_SESSION['SESS_MEMBER_ID'] = $member['member_id'];
        $_SESSION['SESS_FIRST_NAME'] = $member['firstname'];
        $_SESSION['SESS_LAST_NAME'] = $member['lastname'];
        session_write_close();
        header("location: member-index.php");
        exit();
    }else {
        //Login failed
        header("location: login-failed.php");
        exit();
    }
}else {
    die("Query failed");
}

?>

Answer 1

我没有看到任何 session_start() 您需要它（请参阅 手册）在任何使用会话的 php 文件的开头...