Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.


Can't set cookie or redirect.

I have this 3 commands: setcookie("user", $userid, time()+3600); setcookie("pass", $userpw, time()+3600); header("location: profile.php");

And this error: Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\website\header.php:133) in C:\xampp\htdocs\website\login.php on line 25

1 Answer

Dovid Gefen
Dovid Gefen
3,341 Points

In order for setcookie() to work it must be placed above all the Html in your code including the doctype so that the cookie gets set before the header is sent.