Im currently using the ob_start("gz_handler"); to gzip all the contents in my php file. I am also using my .htaccess file to set the expires headers and to check whether the content has been modified or not.

I was wondering considering that i might want to make changes to the design in the future that i split the page into 3 different files, header.php content_name.php and footer.php, this would allow me to edit one file instead of having to keep making the same changes to each individual page if i was to keep them all as one.

Would this have any problems on caching if i included the files via a php include.

Code:

PHP Code:

<?php ob_start("gz_handler");
include("header.php");
includer("content_name.php");
include("footer.php");
?>

.HTACCESS Code:

<IfModule mod_headers.c>
# Turn on Expires and set default expires to 3 days
ExpiresActive On
ExpiresDefault A259200
 
# Set up caching on media files for 1 month
<FilesMatch "\.(ico|gif|jpg|jpeg|png|flv|pdf|swf|mov|mp3|wmv|ppt)$">
  ExpiresDefault A2419200
  Header append Cache-Control "public"
</FilesMatch>
 
# Set up 2 Hour caching on commonly updated files
<FilesMatch "\.(xml|txt|html|js|css)$">
  ExpiresDefault A7200
  Header append Cache-Control "private, must-revalidate"
</FilesMatch>
 
# Force no caching for dynamic files
<FilesMatch "\.(php|cgi|pl|htm)$">
  ExpiresDefault A0
  Header set Cache-Control "no-store, no-cache, must-revalidate, max-age=0"
  Header set Pragma "no-cache"
</FilesMatch>
</IfModule>

Using PHP includes don't affect .htaccess caching (or "HTTP caching" as it's more technically called), so you shouldn't have any problems with that.

If you're interested in caching, though, you might consider looking into using a PHP accelerator like the Alternative PHP Cache (APC). This can speed up your PHP script hugely.

Hope this helps.

Thanks, for info.

Try adding this to your php page
This will Disable all caching

PHP Code:


if(!strpos(strtolower($_SERVER[HTTP_USER_AGENT]), "msie") === FALSE) {
   header("HTTP/1.x 205 OK");
} else {
   header("HTTP/1.x 200 OK");
}    
header("Pragma: no-cache");
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-cache, cachehack=".time());
header("Cache-Control: no-store, must-revalidate");
header("Cache-Control: post-check=-1, pre-check=-1", false);