[RESOLVED] Login and logout link display

[JCSimmers]

I am working on my class final project.. still.. and I have run into another small problem. I have a registration system setup for users, but I would like the "Login" link at the top to be displayed when the user is not logged in, and the "Logout" link to be displayed when the user is logged in. Right now both links are at the very top of the page, regardless if the user is logged in or not. I setup this page http://jcs5325.aisites.com/gallery.php to require authorization to view the content, otherwise you are directed to an access denied page.

I have the site setup so anyone willing to help me can see how it works. Go to http://jcs5325.aisites.com/ and you will see both "Login" and "Logout", but for a page like this (no authorization required) I would like the "Logout" link to be hidden. The page that I have authorization only set on is the "Galleries" page. Now if you click login and provide a valid login (use the test one listed below) then you will be able to access the "Galleries" page, but "Login" and "Register" links will still be displayed at the top, when they really should be hidden for a member. I'll attach some scripts below, I'm not sure what ones will be needed to help me with this problem but I'll use my best judgment. If anything else is needed let me know, thanks a bunch in advance!

Username: jcsimmers
Password: 203633

On the galleries page I have this script at the top to check for the user info. As you can see if there is no user information present they will be taken to the login page.

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

Now for the main index page I don't have any authorization scripts so everything is displayed logged in or not. Here I just want "Login" and "Register" visible, so I imagine I need some sort of script included to tell the page that's all I want.

[Valdhor]

<?php
	//Start session
	session_start();
	//Check whether the session variable
	//SESS_MEMBER_ID is present or not
	if(!isset($_SESSION['SESS_CUSTOMER_ID']) || (trim($_SESSION['SESS_CUSTOMER_ID'])=='')) {
			print("<a href='login.php'>Login</a>");
			print("<a href='register.php'>Register</a>");
		}
		else
		{
			print("<a href='logout.php'>Logout</a>");
		}
	}
?>

[JCSimmers]

I get "Parse error: syntax error, unexpected '}' in /whs2fs1_2us4_2/jcs5325aii/domains/jcs5325.aisites.com/public_html/auth.php on line 14"

I forgot to mention that I am using a separate php file called auth.php, in this file I have the script I posted. I am using the require function to call in the auth.php on any of the pages I want members only.

I am using the include() function on all pages for my header.html file, which contains the login, logout, and register links. As you can see in the code below I have all of the links displayed right now. I would like to modify the header.html file based on whether the user is logged in or not.

User logged in: Shows the logout link in the header.html only, and hides the register and login links
User not logged in: Shows the login and register links from the header.html, and hides the logout link

I think I will need another script similar to auth.php for the pages that can be accessed by anyone. So then I will require('auth.php') for private pages, which will only display the page if the user is logged in and then remove the register and login link on that page from the header.html file.

Now for public pages lets say I made a file called public.php that I will require() at the top. I want this file to also authorize the users login info, but unlike auth.php, I would like the user to still be able to view that page even if they aren't logged in. What I would need to add though is something to tell the page to remove the logout link from the header.html file and only display login and register to the public.

Here is my header.html file with all the links I want at the top:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JCSimmers Photography</title>
<script type="text/javascript" src="js/prototype.js"></script>
<script type="text/javascript" src="js/scriptaculous.js?load=effects"></script>
<script type="text/javascript" src="js/lightbox.js"></script>
<link rel="stylesheet" href="lightbox.css" type="text/css" media="screen" />
<link href="style.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="stmenu.js"></script></head>
<body>
<div id="headerContainer">
<div id="header">
  <div id="topNav"><span class="headerText">My Account </span><span class="divider">|</span><span class="headerText"> Shopping Cart</span> <span class="divider">|</span> <a href="login.php">Login</a> <span class="divider">|</span> <a href="register.php">Register </a><span class="divider">|</span> Logout </div>
  </div>
</div>

Again, here is the auth.php file I require() on the private pages.

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

And the content of the public.php file for public pages is what I need help with, if thats how it's done anyway. I just figured public and private pages would require a different script.

[Valdhor]

Basically, your header.html becomes header.php:

header.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JCSimmers Photography</title>
<script type="text/javascript" src="js/prototype.js"></script>
<script type="text/javascript" src="js/scriptaculous.js?load=effects"></script>
<script type="text/javascript" src="js/lightbox.js"></script>
<link rel="stylesheet" href="lightbox.css" type="text/css" media="screen" />
<link href="style.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="stmenu.js"></script></head>
<?php
    //Start session
    session_start();
    //Check whether the session variable
    //SESS_MEMBER_ID is present or not
    if(!isset($_SESSION['SESS_CUSTOMER_ID']) || (trim($_SESSION['SESS_CUSTOMER_ID'])==''))
    {
        $links = "<a href=\"login.php\">Login</a><span class=\"divider\">|</span><a href=\"register.php\">Register</a>";
    }
    else
    {
        $links = "<a href=\"logout.php\">Logout</a>";
    }
?> 
<body>
<div id="headerContainer">
<div id="header">
  <div id="topNav"><span class="headerText">My Account </span><span class="divider">|</span><span class="headerText"> Shopping Cart</span> <span class="divider">|</span><?php print($links); ?></div>
  </div>
</div>

[JCSimmers]

You're awesome! Works perfectly! Thanks a bunch 🙂

[JCSimmers]

Hmm, I actually have another minor question. Lets say a public user visits the site, then clicks Galleries. They are then taken to the login.php page because they are not a member and must login first. After logging in it takes them to their account home page, but I'd rather have it send them directly to the page they were trying to access in the first place (in this case its the galleries page)

[Valdhor]

Check into $_SERVER['HTTP_REFERER']. From the manual: " The address of the page (if any) which referred the user agent to the current page.".

If that's no good, just add another variable to the session populating it with the page requested. Then you can redirect them back to that page.