Question

I have 2 two php pages.One is the main and include the second and i want to add an expires header to it but i get the following error

    Warning: Cannot modify header information -
 headers already sent by (output started at.. 

In the first one

ob_start('ob_gzhandler', 6);

/// lots of html here

include("pageTwo.php");

/// lots of html here

ob_end_flush();

In the second page

ob_start();
header('Expires: '.gmdate('D, d M Y H:i:s \G\M\T', time() + 3600));

/// lots of html here

ob_end_flush();

Answer 1

Don’t use mode 6 and try to do it naked prior to applying compression.

<?php
ob_start();

// include ...

ob_end_flush();
?>