RewriteEngine On
RewriteCond %{REQUEST_METHOD} ^TRACE
RewriteRule .* -
[F]
RewriteRule ^([a-zA-Z0-9]+)/([a-zA-Z0-9]+)/$ $1.php?do=$2
[L,QSA]
RewriteRule ^([a-zA-Z0-9]+)/([a-zA-Z0-9]+)/([0-9]+)/$
$1.php?do=$2&id=$3 [L,QSA]
RewriteRule
^([a-zA-Z0-9]+)/([0-9]+)/([0-9]+)$ $1.php?id=$2&uid=$3
[L,QSA]
RewriteRule ^([a-zA-Z0-9]+)/([0-9]+)$ $1.php?id=$2 [L,QSA]