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Warning: Cannot modify header information - headers already sent

P: 150
I'm having problem with header redirection that is my code:
//Then the HTML

It give me an error

[HTML]Warning: Cannot modify header information - headers already sent by (output started at C:\wamp\www\example\Signup.php:1) in C:\wamp\www\example\Signup.php on line 2[/HTML]
Sep 24 '07 #1
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2 Replies

Expert 5K+
P: 5,058

The header() function MUST be called before you send anything to the browser... Even a white-space before the <?php tag will cause the error you are getting.

For example:
Expand|Select|Wrap|Line Numbers
  1. <?php
  2. # This will not work, giving you the error you described.
  3. echo "You will be redirected in 3 seconds...";
  4. header("Refresh: 3; url=");
  5. ?>
Expand|Select|Wrap|Line Numbers
  1. <?php
  2. # This, however, will work.
  3. header("Refresh: 3; url=");
  4. echo "You will be redirected in 3 seconds...";
  5. ?>
Sep 24 '07 #2

Expert 5K+
P: 5,821
Changed thread title to better describe the problem (did you know that threads whose titles do not follow the Posting Guidelines actually get FEWER responses?).
Sep 25 '07 #3

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