What's wrong with session_start()?

Porte · 07-01-2005, 07:54 AM

Hello,
????: NamePros.com http://www.namepros.com/programming/103289-whats-wrong-with-session_start.html

This is the code :

<? session_start(); ?>

When I access this page it gives :

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /mnt/storage/users/c/u/s/customcoding/index.php:1) in /mnt/storage/users/c/u/s/customcoding/index.php on line 1

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /mnt/storage/users/c/u/s/customcoding/index.php:1) in /mnt/storage/users/c/u/s/customcoding/index.php on line 1

To tell you the truth, I'm amazed with the results

How can I avoid this ugly error?

I believe I shouldn't see it...

-Ray- · 07-01-2005, 08:36 AM

Output buffering is turned off. Contact your webhost and ask him to turn it off.

Or you can use the ob_start (); command which will buffer the headers for you.

Your Best Friend
-------------------------
http://us4.php.net/ob_start

Porte · 07-01-2005, 08:45 AM

Hello, can you direct me into using ob_start() correctly, I just never used the ob functions. Can you give me a sample code?

I tried to put ob_start() above session_start() but nothing.

I do not know if this is a resolution to my current host or not.. I just added
error_reporting(0);
before
session_start();

Correct me please.

-Ray- · 07-01-2005, 09:08 AM

Put ob_start() start above the session_start()

after ob_start(); use ob_getcontents(); (i think)

after that use ob_printcontents(); (think again)

then ob_end()

i think they are the right ones, the content ones, check in that outpout buffering link i gave you

Porte · 07-01-2005, 09:15 AM

let me check, thanks!

Doesn't work now when I try to use header somewhere it says

Warning: Cannot modify header information - headers already sent by (output started at /home/designpo/public_html/index.php:1) in /home/designpo/public_html/includes/account_info.php on line 6

-Ray- · 07-01-2005, 11:46 AM

then u reuse the ob start command..

The easiest thing to do is contact your web host and ask him to turn on php output buffering.

If u need a host that has it on. read my sig!

Porte · 07-01-2005, 11:52 AM

If you accept credit cards globally, I could sign up..otherwise, no pp support

-Ray- · 07-01-2005, 12:33 PM

check ur pms

val539 · 07-02-2005, 12:30 AM

PHP Code:

<? @session_start(); ?>

or for more security script:

PHP Code:

<? ignore_user_abort(1); error_reporting(0); session_start(); ?>

Regards

aween · 07-02-2005, 03:36 AM

i think this has been fixed

. he found a good host now i guess

Peter · 07-02-2005, 05:30 AM

in my opinion using output buffering certainly is not the best solution, he would be best finding what is causing the error in the first place.

Porte · 07-02-2005, 06:53 AM

Yea, it's been fixed now as xlusive said.. it was something with the host, that output buffering is Off, which globally turns off all session_start() usage.

Thanks though;
Ahmed

Peter · 07-02-2005, 10:41 AM

as far as I am aware output buffering has nothing to do with sessions (and nothing is mentioned in the php manual). The reason the script failed in the first place was because the script output to the browser BEFORE session was started (even a space output causes this error).

The way you have fixed the problem is just a quick and dirty way to go about it and not actually fixing the problem itself.

Porte · 07-02-2005, 11:22 AM

Ok it's a dirty way, and I like it.. anymore comments?

Peter · 07-02-2005, 06:39 PM

just offering advise thats all, that is what you asked for

i386 · 07-08-2005, 10:02 PM

If you used this code, then it'll error out:

<html>
BLAH...
<?php
session_start();
?>

What I use:

Code:

<?php
session_start();

echo <<<ENDDOC
MY DOCUMENT HERE
ENDDOC;

?>

07-01-2005, 07:54 AM	THREAD STARTER #1 (permalink)
Porte Senior Member Join Date: May 2005 Location: I'm right here Posts: 3,526	What's wrong with session_start()? Hello, ????: NamePros.com http://www.namepros.com/programming/103289-whats-wrong-with-session_start.html This is the code : <? session_start(); ?> When I access this page it gives : Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /mnt/storage/users/c/u/s/customcoding/index.php:1) in /mnt/storage/users/c/u/s/customcoding/index.php on line 1 Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /mnt/storage/users/c/u/s/customcoding/index.php:1) in /mnt/storage/users/c/u/s/customcoding/index.php on line 1 To tell you the truth, I'm amazed with the results How can I avoid this ugly error? I believe I shouldn't see it...

07-01-2005, 08:36 AM	#2 (permalink)
-Ray- Senior Member Join Date: Jun 2005 Location: Pennsylvania Posts: 1,839	Output buffering is turned off. Contact your webhost and ask him to turn it off. Or you can use the ob_start (); command which will buffer the headers for you. Your Best Friend ------------------------- http://us4.php.net/ob_start __________________ Poker News, articles, discussion LIKE THIS Its an iPod, a phone, and an internet communications device.

07-01-2005, 09:08 AM	#4 (permalink)
-Ray- Senior Member Join Date: Jun 2005 Location: Pennsylvania Posts: 1,839	Put ob_start() start above the session_start() after ob_start(); use ob_getcontents(); (i think) after that use ob_printcontents(); (think again) then ob_end() i think they are the right ones, the content ones, check in that outpout buffering link i gave you __________________ Poker News, articles, discussion LIKE THIS Its an iPod, a phone, and an internet communications device.

07-01-2005, 11:46 AM	#6 (permalink)
-Ray- Senior Member Join Date: Jun 2005 Location: Pennsylvania Posts: 1,839	then u reuse the ob start command.. The easiest thing to do is contact your web host and ask him to turn on php output buffering. If u need a host that has it on. read my sig! __________________ Poker News, articles, discussion LIKE THIS Its an iPod, a phone, and an internet communications device.

07-01-2005, 12:33 PM	#8 (permalink)
-Ray- Senior Member Join Date: Jun 2005 Location: Pennsylvania Posts: 1,839	check ur pms __________________ Poker News, articles, discussion LIKE THIS Its an iPod, a phone, and an internet communications device.

07-01-2005, 08:45 AM	THREAD STARTER #3 (permalink)
Porte Senior Member Join Date: May 2005 Location: I'm right here Posts: 3,526	Hello, can you direct me into using ob_start() correctly, I just never used the ob functions. Can you give me a sample code? I tried to put ob_start() above session_start() but nothing. I do not know if this is a resolution to my current host or not.. I just added error_reporting(0); before session_start(); Correct me please.

07-01-2005, 09:15 AM	THREAD STARTER #5 (permalink)
Porte Senior Member Join Date: May 2005 Location: I'm right here Posts: 3,526	let me check, thanks! Doesn't work now when I try to use header somewhere it says Warning: Cannot modify header information - headers already sent by (output started at /home/designpo/public_html/index.php:1) in /home/designpo/public_html/includes/account_info.php on line 6

07-01-2005, 11:52 AM	THREAD STARTER #7 (permalink)
Porte Senior Member Join Date: May 2005 Location: I'm right here Posts: 3,526	If you accept credit cards globally, I could sign up..otherwise, no pp support

07-02-2005, 12:30 AM	#9 (permalink)
val539 New Member Join Date: Jul 2005 Posts: 8	PHP Code: `<? @session_start(); ?>` or for more security script: PHP Code: `<? ignore_user_abort(1); error_reporting(0); session_start(); ?>` Regards

07-02-2005, 03:36 AM	#10 (permalink)
aween Pro Coder & Designer Join Date: Apr 2005 Location: Netherlands Posts: 967	i think this has been fixed . he found a good host now i guess __________________ aween web development

07-02-2005, 05:30 AM	#11 (permalink)
Peter NamePros Expert Join Date: Nov 2003 Location: Scotland Posts: 5,069	in my opinion using output buffering certainly is not the best solution, he would be best finding what is causing the error in the first place.

07-02-2005, 06:53 AM	THREAD STARTER #12 (permalink)
Porte Senior Member Join Date: May 2005 Location: I'm right here Posts: 3,526	Yea, it's been fixed now as xlusive said.. it was something with the host, that output buffering is Off, which globally turns off all session_start() usage. Thanks though; Ahmed

07-02-2005, 10:41 AM	#13 (permalink)
Peter NamePros Expert Join Date: Nov 2003 Location: Scotland Posts: 5,069	as far as I am aware output buffering has nothing to do with sessions (and nothing is mentioned in the php manual). The reason the script failed in the first place was because the script output to the browser BEFORE session was started (even a space output causes this error). The way you have fixed the problem is just a quick and dirty way to go about it and not actually fixing the problem itself.

07-02-2005, 11:22 AM	THREAD STARTER #14 (permalink)
Porte Senior Member Join Date: May 2005 Location: I'm right here Posts: 3,526	Ok it's a dirty way, and I like it.. anymore comments? __________________ WP Theme Developer Your One-stop for Premium Magazine/CMS WordPress Themes Deluxe Themes

07-02-2005, 06:39 PM	#15 (permalink)
Peter NamePros Expert Join Date: Nov 2003 Location: Scotland Posts: 5,069	just offering advise thats all, that is what you asked for

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07-08-2005, 10:02 PM	#16 (permalink)
i386 NamePros Member Join Date: Oct 2003 Posts: 126	If you used this code, then it'll error out: <html> BLAH... <?php session_start(); ?> What I use: Code: <?php session_start(); echo <<<ENDDOC MY DOCUMENT HERE ENDDOC; ?>