Why does gzip compress my css & javascript, but not my HTML / php?

Question

When I check this site: http://www.tropicbreeze.co.uk/ , for example, http://checkgzipcompression.com/ - it reports that it uses Gzip. But Islow disagrees.

I have this in my .htaccess file:

AddOutputFilterByType DEFLATE text/html text/php text/x-php application/php application/x-php application/x-httpd-php-source text/plain text/xml text/css text/javascript application/x-javascript application/xhtml+xml application/javascript application/x-httpd-php 

By checking the Net Firebug tab for headers, I see that the various .css and .js files associated with them on this page contain Gzip Content-Encoding, as expected, but php files do not.

Yslow tells me that Gzip is not used on the main page. The Firebug Net tab says that the home page (and other php files on the server) are not sent with Content-Encoding gzip

I tried to add all the mimetype filters that I could find, and as far as I can see, DEFLATE text / html should cover it anyway, but still not happy.

I cleared my cache and do not use proxies.

Can anyone suggest that I missed? Why don't php files load when other files are found? Or, if their are gzipped, why do Firebug / yslow think that this is not so?

Answer 1

Not sure what the problem is, but perhaps an easy fix would be to try something like ...

 <IfModule mod_deflate.c> <FilesMatch "\.(css|htm|html|js|php|txt|xml)$"> SetOutputFilter DEFLATE </FilesMatch> </IfModule> 

... which should configure compression on popular file extensions, including PHP.

I personally think that this format is much easier for a person to read. Bonus!