remove .php extension with .htaccess for subdomains? -

remove .php extension with .htaccess for subdomains? -

i'm not expert @ url-rewrites.

my domain helloboy.

my subdomains www , labs.

i remove .php extension subdomain labs and directory graph?

from: http://labs.helloboy.com/graph/load/show.php

to: http://labs.helloboy.com/graph/load/show/

how can that?

here code .htaccess:

rewriteengine on rewritebase / rewritecond %{http_host} ^labs\.helloboy\.com$ /$1.php -f rewriterule ^(graph/load/.*?)/?$ $1.php [l,nc]

maybe help:

rewritecond %{http_host} labs.helloboy.com$ rewriterule ^graph/(.*)/?$ graph/$1.php [l,nc]

php .htaccess url-rewriting