Having some problems with htaccess remove .php and id= and add slash - php

Question

I have this htaccess and it almost is working, but..
Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^www\.loggs\.no [NC]
RewriteRule ^(.*)$ https://loggs.no/$1 [L,R=301]
RewriteCond %{THE_REQUEST} \s/+show(?:\.php)?\?id=([0-9]+) [NC]
RewriteRule ^ show/%1? [R,L]
RewriteRule ^show/([0-9]+)/?$ show.php?id=$1 [L,QSA]
## hide .php extension snippet
# To externally redirect /dir/foo.php to /dir/foo
RewriteCond %{THE_REQUEST} \s([^.]+)\.php [NC]
RewriteRule ^ %1 [R,L]
# add a trailing slash
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !/$
RewriteRule . %{REQUEST_URI}/ [L,R=301]
But it doesn't add trailing slashes to all my pages and when I'm clicking on show/6 and then will go to e.g. Show/3 it goes until show/show/3
and I would like to remove .php for all my pages too.

Answer 1

You can use these rules in site root .htaccess:
Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^www\.(loggs\.no)$ [NC]
RewriteRule ^(.*?)/?$ https://%1/$1/ [L,R=301,NE]
RewriteCond %{THE_REQUEST} \s/+(show|feeds|links)(?:\.php)?\?id=([0-9]+) [NC]
RewriteRule ^ %1/%2/? [R=301,NE,L]
## hide .php extension snippet
# To externally redirect /dir/foo.php to /dir/foo
RewriteCond %{THE_REQUEST} \s([^.]+)\.php [NC]
RewriteRule ^ %1/ [R=301,NE,L]
# add a trailing slash
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !/$
RewriteRule . %{REQUEST_URI}/ [L,R=301]
RewriteRule ^(show|feeds|links)/([0-9]+)/?$ $1.php?id=$1 [L,QSA,NC]
RewriteRule ^(show|feeds|links)/?$ $1.php [L,NC]