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PHP

Posted by Wendell Pulsipher
Wendell Pulsipher
10,183 Points

PHP header problems

I have seen these errors before but I guess I just never fully understood how to fix them:

Warning: Cannot modify header information - headers already sent by (output started at /path/to/file/history.php:26) in /path/to/file/header.php on line 5

This is my code in history.php on line 26:

<?php include('inc/header.php'); ?>

and this is the code on lines 1-5 of header.php:

<?php
if(isset($_COOKIE['cookiename'])){
  $logged = true;
  $username=$_COOKIE['cookiename'];
  setcookie('cookiename',$username,time()+60*30,'/',"","",true);

how do I get rid of this error?

5 Answers

chrisp
chrisp
13,686 Points

I see. Looking at it again. I think you set this on line 26?

it looks like the cookies are sent in the HTTP response header, and the html content already started and it cannot go back and add the cookies.

My last attempt would be to move your include header all the way on Line 1, before any HTML tags, and below the doctype. Where the set cookies( ) are all the way on top. That way the cookies can be set before any outputs. I can't see all your codes but that my last solution. Good luck.

chrisp
chrisp
13,686 Points
chrisp
chrisp
13,686 Points

Instead of using include( ), maybe try using

require_once('inc/header.php'); Hope that can fix it.

Wendell Pulsipher
Wendell Pulsipher
10,183 Points
Wendell Pulsipher
Wendell Pulsipher
10,183 Points

thanks, but I have tried that already... didn't work. Randy Hoyt , Hampton Paulk , any suggestions?

Jason Anello
PLUS
Jason Anello
Courses Plus Student 94,610 Points
Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Wendell,

Can you post the first 26 lines of that file?

Do you have any blank lines in your php files before the opening php block?

You want to make sure that nothing is being output to the page before setcookie

Wendell Pulsipher
Wendell Pulsipher
10,183 Points
Wendell Pulsipher
Wendell Pulsipher
10,183 Points

Oh good heavens I see the problem. Chris P while having html before the include, so I just took that out of the header file and let all the cookies be set at the beginning of the history.php and shabam! problem solved. I forgot that html counts as output

chrisp
chrisp
13,686 Points

Yay, I am Glad you solved it.