RewriteEngine On
RewriteRule ^([a-zA-Z_]+)$ /$1.php
RewriteRule ^([a-zA-Z0-9_-]+)$ show.php?a=$1
RewriteRule ^([a-zA-Z0-9_-]+)/$ show.php?a=$1
RewriteRule ^(.*)user/(.*)$ $1/show.php?user=$2 z00k/zis/master/.htaccess
RewriteEngine On
RewriteRule ^([a-zA-Z_]+)$ /$1.php
RewriteRule ^([a-zA-Z0-9_-]+)$ show.php?a=$1
RewriteRule ^([a-zA-Z0-9_-]+)/$ show.php?a=$1
RewriteRule ^(.*)user/(.*)$ $1/show.php?user=$2