login script not redirecting sometimes......

cougarreddy · July 20, 2009

hi, I have a login page on an application im doing... login script works fine, but strangely some times when I click the submit button, the page is not redirected to the home page. I have tried to add some "echo " stmts in the redirecting part of the code and I can see that part being executed, seems like just the "" header("Location:itachome.php")""""" is not working. When I give wrong credentials errors are displayed properly, like "No username registered" etc....

here is php script

$error=0;
require_once('config.php');
if(isset($_POST['submit'] )&& $_POST['submit']=="Log In")
{
	session_start();
	//echo "hmm";
	//qry the databse for the given username and password
	$user=mysql_query("SELECT * from users where `userid`='".$_POST['username']."'");
	if(mysql_num_rows($user)==0)
		$error=2;
	else
	{

		$user_det=mysql_fetch_row($user);	
		$password=$_POST['password'];
		if($user_det[3]!=$password)
		{	
			$error=1;
			//echo "123";
		}
		else
		{
			//echo "123";
			$_SESSION['SESSION_User_ID'] = $user_det[2];
			$_SESSION['SESSION_First_Name'] = $user_det[0];
			$_SESSION['SESSION_Last_Name'] = $user_det[1];
			session_write_close();
			header("Location:itachome.php");

			exit();
		}

	}
}

grissom · July 20, 2009

Dunno if this will work, but stick a few more brackets in your IF statement

if ( (isset($_POST['submit'] )) && ($_POST['submit']=="Log In") )

cougarreddy · July 20, 2009

thanks but that did not work......I have added some ""echo 'blablaba' ;""" b/w "header" and "exit" and it started to redirect........ im sure when i come tomorrow it wont redirect again.... i dono what is wrong but it's been a pain.....

cougarreddy · July 21, 2009

yes, as expected my login page did not redirect me to home page this morning..... then I willingly entered wrong password my user id, and it displayed error saying wrong password...... then i entered correct password and then..magic, it redirected me to home page. Still I didnt get why it didnt redirect me in the first place????? appreciate any help guys......

PFMaBiSmAd · July 21, 2009

Are you doing this on a system that has error_reporting set to E_ALL and display_errors set to ON so that all php detected errors would be displayed?

Is your log in form and the form processing code being included into other code or are they stand-a-lone pages? Does the form have any php code on it that could be affecting how/what it submits? Are all the files involved in the same folder? Is the home page perhaps redirecting back to the log in page and it just looks like the redirect to the home page does not work? Are the hostname(subdomain) (www. and no www.) and/or paths in the URL changing between the pages?

Basically, we need to see all the relevant code and know everything that you know about the situation in order to have a chance at finding why something that would normally work behaves the way it is on your system and with your code.

cougarreddy · July 21, 2009

This is my hole login.php page.. PHP code is also in the same page. when user clicks submit button, basically page submits to itself and by checking "isset($_POST['submit'])", php code for login is processed and then redirected to home page.

here is "itaclogin.php" page

*****************************************************

[code=php:0]

<?php
$error=0;
require_once('config.php');
if((isset($_POST['submit']))&& ($_POST['submit']=="Log In"))
{
	session_start();
	//echo "hmm";
	//qry the databse for the given username and password
	$user=mysql_query("SELECT * from users where `userid`='".$_POST['username']."'");
	if(mysql_num_rows($user)==0)
		$error=2;
	else
	{

		$user_det=mysql_fetch_row($user);	
		$password=$_POST['password'];
		if($user_det[3]!=$password)
		{	
			$error=1;
			//echo "123";
		}
		else
		{
			$_SESSION['SESSION_User_ID'] = $user_det[2];
			$_SESSION['SESSION_First_Name'] = $user_det[0];
			$_SESSION['SESSION_Last_Name'] = $user_det[1];
			session_write_close();
			header("Location:itachome.php");
			echo "123";
			exit();
		}

	}
}
?>


<html>
<head>
	<title>Data Center/Remote Locations Access Request Form - ITAC</title>
	<link rel=stylesheet href="request.css" type="text/css">
	<SCRIPT LANGUAGE="JAVASCRIPT" SRC="access.js"></SCRIPT>
	<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1 www.spicescripts.com scripts for your business php perl mysql">
</head>
<body>
	<div id="header">
	<?php require_once('header.php');?>
	</div>
	<hr size="4" color="#000000"/>
	<div id="maincontent">
		<form name="itaclogin" method="POST" action="" onsubmit="return blankTextField();" >
			<p> </p><p> </p><p> </p>
			<div id="fieldWrap">
					<label for="logintext"><span class="label">Please Enter your Log In details.</label>
					<?php
								if($error==1)
									echo "<p align='left'>Invalid userid/password combination</p>";
								if($error==2)
									echo "<p align='left'>UserID is not registered</p>";
							?>
					<p>	
						<label for="username"><span class="label">Username<br/></label>
						<input type="text" size="20" value="" class="input" id="user_login" name="username"/></span><br>
						<label for="password"><span class="label">Password<br/></label>
						<input type="password" size="20" value="" class="input" id="user_pass" name="password"/></span>
					</p>
					<p class="submit">
						<input type="submit" value="Log In" id="submit" name="submit"/>
					</p>
			</div> 
			<p> </p><p> </p><p> </p>
		</form>
	</div>
	<hr size="4" color="#000000"/>		
    </body>
</html>

cougarreddy · July 21, 2009

Yes, I do have error reporting set to E_ALL in my congif.php page.

error_reporting(~E_ALL);

I commented it to see whether it is throwing any errors, but no luck, no errors being displayed..just the login page appears again....

PFMaBiSmAd · July 21, 2009

error_reporting(~E_ALL); does not set error_reporting to E_ALL it sets it to NOT E_ALL.

Use the following -

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

cougarreddy · July 21, 2009

tried....still no errors displayed....

cougarreddy · July 21, 2009

im sure execution flow is reaching the the "header()" statement, because, when I have added two echo stmts up above n below the header line,

echo "123";
header("Location:itachome.php");
echo "456";

browser displayed,

********

123

warning: cannot modify header information - headers already sent by (output started at d:\ITAC\DCAR\itaclogin.php:32) in d:\ITAC\DCAR\itaclogin.php on line 33

456

********

and when I commented first echo, i.e. "echo '123' ".. nothing happened, no warnings no redirection, and also no "456" being rendered to the browser....

******

cougarreddy · July 21, 2009

what is surprising me the most is... when I give wrong credentials i get error message and then immediately I give correct credentials and I am being redirected :confused: .... I guess this will be one of the strangest things u'll see on this forum...or my code just sucks.......

cougarreddy · July 27, 2009

Any help????????

cougarreddy · August 4, 2009

Sign In

login script not redirecting sometimes......

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