Forum Moderators: coopster
About a login process, if user not entering the right username/password, then cannot access to the page and so on.
i have developed a page called 'check_login.php' to check whether the user has entered the correct username n password.
the problem is, when the user entered their password, the warning message:
"Warning : Cannot add header information - headers already sent by (output started at C:\apache\htdocs\oosystem\check_login.php:33) in C\apache\htdocs\oosystem\check_login.php on line 71"
appeared on check_login.php page.
what is this warning message mean?
this problem begin when i transfered my php-based project (online ordering system) into another machine. the login is part of the project. just that the location of the OOSystem folder was different.
Original machine - C:\Program Files\Apache Group\Apache\htdocs\OOSystem\
New machine - C:\Apache\htdocs\OOSystem\
The system works ok in the original machine.
i'm using session for all the pages, and i've created 'tmp' folder in C:\
The line 71 in check_login.php is:
header("Location: [localhost...]
complete portion of the code is:
<?
//from login.php
$staff_login=$_POST["staff_login"];
$staff_password=$_POST["staff_password"];
$sqlsel="select staff_code, proj_code, staff_login, staff_password, staff_dept, staff_name from staff where staff_login = '$staff_login'";
$db =mysql_db_query($dbname,$sqlsel,$dblink)
or die("Error in query: $sqlsel. ".mysql_error());
$num_result = mysql_num_rows($db);
if($num_result==0)
{?>
WRONG PASSWORD!
Please Relogin. <link redirect to login.php>
<?
session_destroy();
//this is line 71.
header("Location: [localhost...]
}
else
{
session_register('sess','staff_name','proj_code','todaynow','staff_code');
?>
..... will redirect to the respective frontpage.php page based on the user_id bcoz different user will view different page.
..... and assign a random value for session variable '$sess'
<? }?>
Hoping for some advice n info.
Thank You. :)
ob_start();
after the cookie but before the redirect. This has worked for me in my shopping cart. Don't know if there are any other issues with this though.
