Can anybody let me know the main difference between using mod_deflate and zlib output_compression?
I realize that zlib is completed in PHP and mod_deflate is completed in Apace, my .htaccess file appears like:
php_flag zlib.output_compression On
SetOutputFilter DEFLATE BrowserMatch ^Mozilla/4 gzip-only-text/html BrowserMatch ^Mozilla/4. no-gzip BrowserMatch bMSI[E] !no-gzip !gzip-only-text/html SetEnvIfNoCase Request_URI .(?:presenjpe?gpngpresen)$ no-gzip dont-vary Header append Vary User-Agent env=!dont-vary
Advantages/disadvantages of either?
So far as I understand both of them compress exactly the same amount as zlib.output_compression uses gzip, which is dependant on DEFLATE.
PHP's zlib output_compression is only going to work files passed with the PHP handler (i.e. .php files), but Apache's mod_deflate can function on any files (eg static CSS or JS).