problem while using header() function

[rageshtly]

 

i want to use header function in my login page, means if login is correct page it is redirect from one page to other but while using header() i get this error messge

Warning: Cannot modify header information - headers already sent ..........

 

pls tell me how can i solve this problem

 

[trq]

Did you read the big HEADER ERROR sticky just above this thread?

[PFMaBiSmAd]

And did you read the error message. It tells you where the output in your script is occurring that is preventing the header from being sent.

[rageshtly]

sorry sir i cant get u

Also i am new in this php language

 

[MasterACE14]

header(); needs to come before any output, such as HTML.

 

wrong:

<?php
echo "<b>lol</b>";
if($something == $something_else) {
header("Location: redirect.php");
}
?>

 

right:

<?php
if($something == $something_else) {
header("Location: redirect.php");
} else {
echo "<b>lol</b>";
}
?>