Generator URL Friendly SEO PHP with htaccess

Question

I want to create a friendly url with hidden variable 

Options +FollowSymLinks -MultiViews


RewriteEngine on
RewriteBase /

RewriteRule ^([^/]+)/([^/]+)/([^/]+)/(.*)$ index.php?lang=$1&page=$2&detail=$3 [L,QSA,NC]
RewriteRule ^([^/]+)/([^/]+)/(.*)$ index.php?lang=$1&page=$2 [L,QSA,NC]
RewriteRule ^([^/]+)/(.*)$ index.php?lang=$1 [L,QSA,NC] 

this is the htlacess file 

but the page returns error but shows the content 

Answer 1

Options +FollowSymLinks -MultiViews
RewriteEngine on
RewriteBase /

# skip all files and directories from rewrite rules below
RewriteCond %{REQUEST_FILENAME} -d [OR]
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule ^ - [L]

RewriteRule ^([^/]+)/([^/]+)/([^/]+)/(.+)$ index.php?lang=$1&page=$2&detail=$3 [L,QSA]
RewriteRule ^([^/]+)/([^/]+)/(.+)$ index.php?lang=$1&page=$2 [L,QSA]
RewriteRule ^([^/]+)/(.+)$ index.php?lang=$1 [L,QSA]

us this code to create a friendly url with hidden variables