htaccess removing .php extension and pretty urls - regex

Question

Im trying to both remove .php extensions. So for example "http://localhost/timetable/login" instead of "http://localhost/timetable/login.php"
But also have
"http://localhost/timetable/38/" instead of
"http://localhost/timetable/index.php?week=38"
Im able to get one or the other working but not both at the same time. Im assuming its because there is a conflict between them but Im not advanced enough to find it.
Here is my .htaccess file:
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME}.php -f
RewriteRule ^(.*)$ $1.php [NC,L]
RewriteRule ^([0-9]+)$ index.php?week=$2
RewriteRule ^([0-9]+)/$ index.php?week=$2
If in the address bar I type "http://localhost/timetable/38" it brings me to "http://localhost/38/" and an Object not Found error.
Does anyone know what the problem is ?
UPDATE: I can now go to the page but
echo $_GET['week'];
Is returning empty result, so its ignroing the 40 in "http://localhost/timetable/40"

Answer 1

Instead of using separate rewrite rule for each input, you should consider routing all of them as a single string to some php file.
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php?page=$1 [L,QSA]
In you php file, you can then separate the string as input and use them as required.
<?php
$inputs = explode('/', $_GET['page']);

Answer 2

You only have one capture group when you try to get the week. So it should be $1 instead of $2.
According to this test tool, the following should work:
RewriteRule ([0-9]+)/?$ index.php?week=$1
I would do something like this:
# rewrite if url ends with a number and possibly a slash
RewriteRule ([0-9]+)/?$ index.php?week=$1 [QSA,L]
# do not append .php if it already ends with .php, other add .php
RewriteCond %{REQUEST_URI} !\.php$
RewriteRule ^(.*)$ $1.php [QSA,L]