header() functino failure !!!!!

[halm1985]

Why is the following error always displayed on my browswer when i use HEADER() function ?

 

Warning: Cannot modify header information - headers already sent by (output started at C:\wamp\www\Applications\Guest_Book\admin.php:10) in C:\wamp\www\Applications\basic.php on line 6

 

 

[flappy_warbucks]

Becuase there has been an output to the page before (such as an error) but if *anything* is sent to the browser then the header function wont work

 

for example:

 

echo "hello";
header("Location: somepage.php");

 

that wont work,. however this will:

 

header("Location: somepage.php");

 

the reason is that php has sent out the headers already, and it cannto do it again.

[DJTim666]

If you use the ob_start(); function at the top of your page you can output headers even if information has been sent to the browser !

[halm1985]

ok, but the problem still exists

 

here's the case

 

i have the following defined function in header.php file

 

 

<?php

# AUTENTICATE
function authenticate($realm = "WBGRS", $errmsg)
{

header("WWW-Authenticate : Basic realm = \"$realm\"");
header("HTTP/1.0 401 Unauthorized");
die ($errmsg);

}

 

and i need to call this function after including this HEADER.PHP page in another one ?? how can that be done ??

 

ABOUT THE OBSTART() function .. it didn't work .. what should the supplied arguments be ?

[DJTim666]

not OBSTART();

 

ob_start();

 

it is called output buffering.

[halm1985]

yeah .. i typed it ob_start() .. i just put it this way here ..

[Guardian-Mage]

go to php.net and search for the function.  It gives a nice description of how to use it.

[DJTim666]

Well, I don't see why it wouldn't work, unless your hosting provider has disabled it ???

[halm1985]

I'm working on a local host .. "WAMP" architicture