Session trouble in index.php

phlow

Whenever I put an "session_start()" in an index.php file, I get a warning:
"Warning: Cannot send session cache limiter - headers already sent (output started at c:\phpdev\www...\index.php:1) in c:\phpdev\www...\index.php on line 1" although it's in the first line! I really can't explain why!
The crazy thing is: when I rename the file there is no such warning!

Any hints are welcomed!
Thx, Phlow!

drag0n

u have to put session start above all html and all includes...

phlow

It is in the first line. There is no include or html output before the session_start().
The crazy thing is: it's only in "index.php" files. when I rename the file to "index2.php" there is no such problem!

This really drives me insane!

drag0n

thats pretty weird... you ight want to post you php.ini somewhere and let other debug it for you..

phlow

I don't think that it's the php.ini file, cause I can't find the string "index.php" in it...

phlow

Sorry for the doublepost - but this is so weired: Even, if my index.php only contains the following:

<?php
	header("Location: index2.php");
?>

Gives me the Warning:
Warning: Cannot add header information - headers already sent by (output started at c:\phpdev\www...\index.php:1) in c:\phpdev\www...\index.php on line 2

If someone has ANY idea, please help me!

drag0n

its because of the header redirect....

phlow

Yeah, but normally it should be no problem to send a redirect-header, right?

drag0n

well... why are you using it, Ive heard that people who use Jscript redirects dont have the header problems.. Im trying to think why... but you might want to check that out... SESSIONS have to be set before ALL HTML, it can be embedded within the pure php code... but not with the html.

phlow

Yeah, I know that headers must be sent before any output (html) is sent, but even though I have no html in my file, I get the error!!

synergypoint

session_start must be called BEFORE sending ANY output to the browser which includes a redirect.

You need to post the code as it is in the page.

If you even have any whitespace output to the browser it will prevent you from adding any additional header information.

For example if you have a blank line at the top of your PHP file, it will send output to the browser.

1
2 <?PHP //PHP begins here ?>
3 
4
.
.
.