Question

的index.php

<?php
session_start();
require_once('../inc/db/dbc.php');
include('login_helper.php'); 
?>

<!--

html form

-->

Login/Logout Links depending on session state:
<?php 
    if($_SESSION['valid'] == 1){
        echo "<a href='logout.php'>Logout</a>";
        echo 'userID '.$userid;
    }
    else{
        echo "<a href='index.php'>Login</a>";
    }
?>

check_buyer.php

<?php
session_start(); #recall session from index.php where user logged include()
require_once('login_helper.php');
/*
function validateUser()
{
    session_regenerate_id (); //this is a security measure
    $_SESSION['valid'] == 1;
    $_SESSION['userid'] = $userid;
}
function isLoggedIn()
{
    if(isset($_SESSION['valid']) && $_SESSION['valid'])
        return true;
    return false;
}
*/

require_once('../inc/db/dbc.php');
$connect = mysql_connect($h, $u, $p) or die ("Can't Connect to Database.");
mysql_select_db($db);

$LoginUserName = $_POST['userName'];
$LoginPassword = mysql_real_escape_string($_POST['userPass']);
//connect to the database here
$LoginUserName = mysql_real_escape_string($LoginUserName);
$query = "SELECT uID, uUPass, dynamSalt
        FROM User
        WHERE uUName = '$LoginUserName';";
$result = mysql_query($query);
if(mysql_num_rows($result) < 1) //no such USER exists
{
    echo "Invalid Username and/or Password";
}
$ifUserExists = mysql_fetch_array($result, MYSQL_ASSOC);

$dynamSalt = $ifUserExists['dynamSalt'];  #get value of dynamSalt in query above
$SaltyPass = hash('sha512',$dynamSalt.$LoginPassword); #recreate originally created dynamic, unique pass

if($SaltyPass != $ifUserExists['uUPass']) # incorrect PASS
{
    echo "Invalid Username and/or Password";
}

else {
validateUser();
}
//if the user has not logged in
if(!isLoggedIn())
{
    echo "<html>
<head>
<meta http-equiv='refresh' content='0'; url=index.php'>
</head>
<body>
</body>
<html>";
    die();
}

?>

login_helper.php

<?php
 function validateUser()
{
    #session_regenerate_id (); //this is a security measure
    $_SESSION['valid'] == 1;
    $_SESSION['uID'] = $userid;
    echo "Session made";
}

function isLoggedIn()
{
    if(isset($_SESSION['valid']) && $_SESSION['valid'])
        return true;
    return false;
}

function logout()
{
    session_start();
    $_SESSION = array(); //destroy all of the session variables
    session_destroy();
   echo "
    <html>
    <head>
    <meta http-equiv='refresh' content='0'; url=index.php'>
    </head>
    <body>
    </body>
    <html>";
}
?>

pwhome.php

<?php
session_start();

function isLoggedIn()
{
    if(isset($_SESSION['valid']) && $_SESSION['valid'])
        return true;
    return false;
}

//if the user has not logged in
if(!isLoggedIn())
{
    header('Location: index.php');
    die();
}
?>

<?php 
    if($_SESSION['valid'] == 1){
        echo "<a href='logout.php'>Logout</a>";
        echo 'userID '.$userid;
    }
    else{
        echo "<a href='index.php'>Login</a>";
    }
?>

logout.php

<?php    
require_once('login_helper.php');
logout();
?>

当前状态：当我访问index.php并使用确实正确的凭据登录时，我得到了永无止境的check_buyer.php

刷新

如何正确登录（来自index.php）并在index.php上提供有效凭据时将我正确地重定向到pwhome.php？

Answer 1

我想知道您的代码，如果您要注销并使用新会话值刷新index.php，为什么不在注销功能中放置header( 'Location: index.php' );？

所以，我认为这可能会有所帮助，修改你的 logout.php ：

<强> Logout.php

<?php  
session_start();
function logout()
{
  $_SESSION = array(); //destroy all of the session variables
  session_destroy();
  echo "logged out?";
  header( 'Location: index.php' );
}

logout();
?>

上次编辑：

尝试以下代码：

<强>的index.php

<?php
session_start();
require_once('../inc/db/dbc.php');
?>

<!-- 

html form 

-->

<?php 
    if($_SESSION['valid'] == 1){
        echo "<a href='logout.php'>Logout</a>";
        echo 'userID '.$userid;
    }
    else{
        echo "<a href='index.php'>Login</a>";
    }
?>

<强> check_buyer.php

<?php
session_start(); #recall session from index.php where user logged include()

require_once('../inc/db/dbc.php');
$connect = mysql_connect($h, $u, $p) or die ("Can't Connect to Database.");
mysql_select_db($db);

$LoginUserName = $_POST['userName'];
$LoginPassword = mysql_real_escape_string($_POST['userPass']);
//connect to the database here
$LoginUserName = mysql_real_escape_string($LoginUserName);
$query = "SELECT uID, uUPass, dynamSalt
        FROM User
        WHERE uUName = '$LoginUserName';";
$result = mysql_query($query);
if(mysql_num_rows($result) < 1) //no such USER exists
{
    echo "Invalid Username and/or Password";
}
$ifUserExists = mysql_fetch_array($result, MYSQL_ASSOC);

$dynamSalt = $ifUserExists['dynamSalt'];  #get value of dynamSalt in query above
$SaltyPass = hash('sha512',$dynamSalt.$LoginPassword); #recreate originally created dynamic, unique pass

if($SaltyPass != $ifUserExists['uUPass']) # incorrect PASS
{
    echo "Invalid Username and/or Password";
}

else {
validateUser();
}
//if the user has not logged in
if(!isLoggedIn())
{
    header('Location: index.php');
    die();
}

function validateUser()
{
    session_regenerate_id (); //this is a security measure
    $_SESSION['valid'] = 1;
    $_SESSION['uID'] = $userid;
}

function isLoggedIn()
{
    if(isset($_SESSION['valid']) && $_SESSION['valid'])
        return true;
    return false;
}
?>

<强> logout.php

<?php    
session_start();
function logout()
{
    $_SESSION = array(); //destroy all of the session variables
    session_destroy();
    header( 'Location: index.php' );
}
logout();
?>

Answer 2

而不是

header('Location: index.php');

尝试meta refresh进行页面转发。关闭php块后，添加一些HTML代码，如;

<html>
<head>
<meta http-equiv="refresh" content="0; url=index.php">
</head>
<body>
</body>
<html>

有时，当您使用header()函数进行页面转发时，会话无法正常工作。

会话开始和停止错误Php

2 个答案: