php - How to create directory like urls for each page on a website -

i have content site spreads across multiple pages there 1 index.php file retrieves data database based on page no.

currently url direction has domainname.com/page/content.php?page=3

i have noticed, quite few sites have directory structure urls like:

domainname.com/page/3

i know how change domainname.com/page/?page=3 looking remove ?page part.

how can this, without individually creating directory each page, content keeps growing, hence changes each page.

thanks

these sites use mod_rewrite "rewrite" on requested url using regular expression

edit:

rewriting this: domainname.com/page/3

to that: domainname.com/page/content.php?page=3

would in .htaccess file:

<ifmodule mod_rewrite.c>     rewriteengine on     rewritecond %{request_filename} !-f     rewritecond %{request_filename} !-d     rewriterule ^([a-za-z]*)/(.*)$ /content.php/$1/page=$2 [l] </ifmodule> <ifmodule !mod_rewrite.c>     errordocument 404 /error_with_mod_rewrite.html </ifmodule> 

here made restriction var name letter either capital or small.