Cookie Help

**insane** · 10-15-2005, 12:45 PM

When setting Cookies for instance

PHP Code:


setcookie("UsersName", "Insane", time()+3600);

i always get the error:

Warning: Cannot modify header information - headers already sent by (output started at d:\apache\php\temp2.php:3) in d:\apache\php\temp2.php on line 4

-insane

**Scleppel** · 10-15-2005, 01:02 PM

You have to set cookies before any output (echoes, prints, whitespace, normal html, etc.) or you can put

PHP Code:


<?php

ob_start();

?>

at the very start of your script before any output.

**insane** · 10-15-2005, 01:17 PM

2 problems.
first of all. where should i put it? examples pls
second of all. the error appears even if i don't have any output on the page.

-Insane

**bokeh** · 10-15-2005, 01:22 PM

His suggestion would be used before anything else in the script. (first line without any leading white space. To be honest though it is a band aid fix and you should write your code so there is no output including white space in included files before headers have been sent.

**insane** · 10-15-2005, 01:30 PM

Well i sorta tried to understand the error message

Warning: Cannot modify header information - headers already sent by (output started at d:\apache\php\temp2.php:3) in d:\apache\php\temp2.php on line 5

and i the problem is that it can't even set the cookie, not that php can't read it.
i cut/pasted the exact code from a tutorial site and it still didn't work. i'm using FireFox v1.0.4
pls help

-Insane

Full Code:

PHP Code:


<html>

<body>

<?php

ob_start();

setcookie("UsersName", "Insane", time()+3600);

?>

</body>

</html>

**chazzy** · 10-15-2005, 01:39 PM

Code:

<?php
ob_start();
setcookie("UsersName", "Insane", time()+3600);
?>
<html>
<body>
<?php
printf($_COOKIE['UsersName']);
?>
</body>
</html>

That's what they're telling you to do.

**bokeh** · 10-15-2005, 02:17 PM

Originally Posted by chazzy

Code:

<?php
ob_start();
setcookie("UsersName", "Insane", time()+3600);
?>
<html>
<body>
<?php
printf($_COOKIE['UsersName']);
?>
</body>
</html>

That's what they're telling you to do.

Two things:
1) ob_start is not necessary,
2) You cannot send and then read a cookie on the same request.

**chazzy** · 10-15-2005, 04:12 PM

Originally Posted by bokeh

Two things:
1) ob_start is not necessary,
2) You cannot send and then read a cookie on the same request.

I just included the print line so he knew how to reference his cookie.

and I just basically copied and pasted his code so he saw how it moved.

**bokeh** · 10-15-2005, 04:26 PM

Originally Posted by chazzy

I just included the print line so he knew how to reference his cookie.

and I just basically copied and pasted his code so he saw how it moved.

I'm not saying your code is wrong... I am just clarifing those two issues!

**cwrath** · 10-15-2005, 05:14 PM

has anyone told him to make sure there is no white space before or after ?> <?php tags yet?

**insane** · 10-16-2005, 05:46 AM

i't worked when i put the cookieset in front of the <html> tags.
thx for your help guys

-Insane

**chazzy** · 10-16-2005, 01:16 PM

Originally Posted by Scleppel

You have to set cookies before any output (echoes, prints, whitespace, normal html, etc.) or you can put

PHP Code:


<?php

ob_start();

?>

at the very start of your script before any output.

as far as I'm concerned, this is Scleppel telling him to put it before anything in his page. i guess it should have been pointed out what this means exactly.

glad you got it working.

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