$_SESSION problem

cheesybiscuits · April 1, 2012

Hiya, I'm quite new to php.

My script was working fine till I transferred to a new host. The login system doesn't seem to register the $_SESSION 'userid' variable, so the proper page won't load because it thinks I'm not logged in.

login.php - processes the login information

<?php
session_start();
include('functions.php');
connect();
// note: session_start needs to be on every document apart 
// from index.php, login.php and register.php

$username = protect($_POST['username']);
$password = protect($_POST['password']);
// the password and username from the inputs are stored in variables

if ($username&&$password) {
// if both the username and password variables are true
	$query = mysql_query("SELECT * FROM users WHERE username='$username'");
	$numrow = mysql_num_rows($query); 

	if ($numrow!=0) {
	// if $numrow does not equal nothing
		while ($row = mysql_fetch_assoc($query)) {
			$userid = $row['userid'];
			$dbusername = $row['username'];
			$dbpassword = $row['password'];
		}
		if ($username==$dbusername&&md5($password)==$dbpassword) {
		// $password gets encrypted so it can be checked on the database password
			$_SESSION['username'] = $username;
			$_SESSION['userid'] = $userid;
			// used for sessions knowing who is logged in
			header("Location:main.php");
			// redirects to main.php page after successful login
		} else {
			echo "Incorrect password";
		}
	} else {

?>
<html>
<head>
<title>University Crusade</title>
<link rel="stylesheet" href="css/style.css" type="text/css" media="screen">
<meta name="viewport" content="width=device-width, minimum-scale=1,maximum-scale=1, user-scalable=no">
</head>
<body>
<div id="wrapper">
<?php
		die ("

		That account doesn't exist...<br /><a href=\"index.php\">try again,</a>
		 <a href=\"register.php\">or register an account.</a>
		");
	}
} else {
	die("Please enter a username and password");
}
?>
</div>
<div id="footer">

</div>
</body>
</html>

and the main.php - after login.php it takes the user here

<?php 
session_start();
include('functions.php');
connect();
?>
<html>
<head>
<title>University Crusade</title>
<link rel="stylesheet" href="css/new.css" type="text/css" media="screen">
<meta name="viewport" content="width=device-width, minimum-scale=1,maximum-scale=1, user-scalable=no">
</head>
<body>
<?php	
if (isset($_SESSION['userid'])) {
	include('safe.php');
?>
<ul id="tab-nav">
	<li><a href="stats.php" id="tab-character">CHARACTER</a></li>
	<li><a href="games.php" id="tab-games">GAMES</a></li>
	<li><a href="account.php" id="tab-account">ACCOUNT</a></li>
</ul>
<div id="wrapper">
	<h2 id="name">Hello, <?php echo $_SESSION['username'] ?>!</h2>
	<p>
	Welcome to UNIVERSITY CRUSADE the fantasy-themed pervasive web game!
	</p>
	<p>
	To start playing, begin with clicking the "games" button at the top of
	the screen, from there choose a challenge and follow the instructions
	</p>
	<p>
	What are the other buttons for? Well, the "account" button (top-right)
	is where you can change settings for your account - things like changing
	your password, deleting your account etc. The "character" button (top-left)	
	when clicked takes you to your character, you can change your display picture,	
	view your statistics and battle other players.
	</p>
	<p>
	More help with the game is available in the "account" section, this includes
	a detailed game manual describing in-detail game concepts and information.
	</p>
</div>
<div id="footer">
	<a href="logout.php" class="button">log me out</a>
</div>
<?php
} else {
	die ("
		<div id=\"wrapper\">
			<p>Opps! You don't seem to be logged in...</p>
			<a class=\"button\" href=\"index.php\">login now</a><br />
			<p>Don't have an account? No worries, just <a href=\"register.php\">register for one.</a></p>
		</div>
	");
}
?>
</body>
</html>

I appreciate any help, as I'm left scratching my head.

Drummin · April 1, 2012

See if changing this line makes a difference.

if ($username&&$password) {

to

if (isset($username) && isset($password)) {

cheesybiscuits · April 1, 2012

Hiya, Drummin

The login.php executes fine, but when it gets to main.php this line of code fails

if (isset($_SESSION['userid'])) {

cpd · April 1, 2012

Are you sure your even reaching main.php?

cheesybiscuits · April 1, 2012

CPD,

yes, the

header("Location:main.php");

is being executed and is taking the player to that page, its just once there the main.php page doesn't recognise the

$_SESSION['userid']

has been set, so displays the page as if the player isn't already logged in.

cpd · April 1, 2012

I get the feeling it might be something to do with your database and you not actually getting any information.

Can you run a few checks to ensure your actually getting the expected results and confirm the userid is being set inside login.php with a die function or something.

PFMaBiSmAd · April 1, 2012

Add the following two lines of code to both pages, putting it immediately after the first opening <?php tag, to see if there are any session related errors -

ini_set("display_errors", "1");
error_reporting(-1);

cheesybiscuits · April 1, 2012

PFMaBiSmAd,

Warning: session_start() [function.session-start]: open(/var/php_sessions/sess_658b974c141c9b9d014548ef21e9e429, O_RDWR) failed: No such file or directory (2) in /hermes/web08/b2309/moo.universitycrusadecom/login.php on line 4

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /hermes/web08/b2309/moo.universitycrusadecom/login.php:4) in /hermes/web08/b2309/moo.universitycrusadecom/login.php on line 4

Warning: Cannot modify header information - headers already sent by (output started at /hermes/web08/b2309/moo.universitycrusadecom/login.php:4) in /hermes/web08/b2309/moo.universitycrusadecom/login.php on line 31

Warning: Unknown: open(/var/php_sessions/sess_658b974c141c9b9d014548ef21e9e429, O_RDWR) failed: No such file or directory (2) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0

I got these error messages, do you know what they mean?

Thanks

cheesybiscuits · April 1, 2012

CPD,

Just checked the results and yes everything is doing what it is expected before going to main.php

PFMaBiSmAd · April 1, 2012

I got these error messages, do you know what they mean?

Yes, I do. Did you read them, they tell you what the problem is -

Failed to write session data (files). Please verify that the current setting of session.save_path is correct

The folder that the session.save_path setting points to does not exist. You either need to create the folder (assuming that the session.save_path setting is correct and appropriate) or you need to correctly set the session.save_path setting so that points to a correct and appropriate folder for your hosting account (may require you to create a folder within your account's folder tree.)

cheesybiscuits · April 1, 2012

Thanks PFMaBiSmAd, it was the session.save_path on my host. All sorted now and works fine

Sign In

$_SESSION problem

Recommended Posts

cheesybiscuits

Link to comment

Share on other sites

Drummin

Link to comment

Share on other sites

cheesybiscuits

Link to comment

Share on other sites

cpd

Link to comment

Share on other sites

cheesybiscuits

Link to comment

Share on other sites

cpd

Link to comment

Share on other sites

PFMaBiSmAd

Link to comment

Share on other sites

cheesybiscuits

Link to comment

Share on other sites

cheesybiscuits

Link to comment

Share on other sites

PFMaBiSmAd

Link to comment

Share on other sites

cheesybiscuits

Link to comment

Share on other sites

Join the conversation

Browse

Activity

Important Information