.htaccess

<IfModule mod_rewrite.c>
    Options +FollowSymLinks -MultiViews
    RewriteEngine On

    RewriteRule ^admin/ - [L,NC]

    RewriteCond %{THE_REQUEST} \ /(.+/)?index\.php(\?.*)?\ [NC]
    RewriteRule ^(.+/)?index\.php$ /%1 [NC,R=301,L]

    RewriteCond %{ENV:REDIRECT_STATUS} ^$
    RewriteCond %{SCRIPT_FILENAME} -f
    RewriteCond %{REQUEST_URI} ^(/.+)\.php$
    RewriteRule ^(.+)\.php$ %1/ [R=301,L]

    RewriteCond %{REQUEST_URI} !(/$|\.)
    RewriteRule (.*) %{REQUEST_URI}/ [R=301,L]

    RewriteCond %{REQUEST_URI} ^(/.+)/$
    RewriteCond %{DOCUMENT_ROOT}%1.php -f
    RewriteRule ^.+/$ %1.php [QSA,L]
</IfModule>

<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresByType image/gif "access plus 7 days"
    ExpiresByType image/ico "access plus 7 days"
    ExpiresByType image/jpeg "access plus 7 days"
    ExpiresByType image/jpg "access plus 7 days"
    ExpiresByType image/png "access plus 7 days"
    ExpiresByType text/css "access plus 7 days"
    ExpiresByType text/javascript "access plus 7 days"
    ExpiresByType application/x-javascript "access plus 7 days"
    ExpiresByType application/javascript "access plus 7 days"
</IfModule>

<IfModule mod_headers.c>
<FilesMatch "\.(gif|ico|jpeg|jpg|jpe|png)$">
    Header set Cache-Control "max-age=604800, public"
</FilesMatch>

<FilesMatch "\.(css|js)$">
    Header set Cache-Control "max-age=604800, public, must-revalidate"
</FilesMatch>

<filesMatch ".(php|cgi)$">
    Header set Cache-Control "max-age=0, private, no-store, no-cache, must-revalidate"
</filesMatch>
</IfModule>

<Files .htaccess>
    order allow,deny
    deny from all
</Files>