.htaccess using public folder and SEO friendly URL

Question

.htaccess is not my strong suit. Is there any there can optimize this code?

RewriteEngine on
RewriteCond %{REQUEST_URI} !^/(public)
RewriteRule (.*) /public/1ドル
Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME}.php -f
RewriteCond %{REQUEST_URI} !/$
RewriteRule (.*) 1ドル\.php [L]
ErrorDocument 500 "Sorry, our script crashed. Oh dear"
ErrorDocument 500 /cgi-bin/crash-recover
ErrorDocument 500 http://error.example.com/server_error.html
ErrorDocument 404 /errors/not_found.html
ErrorDocument 401 /subscription/how_to_subscribe.html

don't know if it necessary but here are an example of the folder system

• app
• public
  • index.php
  • contact.php
  • forum
    • last_news.php
    • users
      • user.php
    • ask.php
• .htaccess

Answer 1

1. Redundant RewriteEngine declarations
2. Unused match group in (public)
3. Escaping (using \) is not needed in the new URLs
4. A personal touch, but I prefer to keep the core directives at the top, and put module specific directives inside <IfModule> body, so that I won't receive errors if the modules are disabled.
5. Multiple declarations for ErrorDocument 500

---

Options +FollowSymLinks -MultiViews
ErrorDocument 401 /subscription/how_to_subscribe.html# Turn mod_rewrite on
ErrorDocument 404 /errors/not_found.html
ErrorDocument 500 http://error.example.com/server_error.html
<IfModule mod_rewrite.c>
 RewriteEngine on
 RewriteBase /
 RewriteCond %{REQUEST_URI} !^/(public)
 RewriteRule ^ /%1%{REQUEST_URI}
 RewriteCond %{REQUEST_FILENAME}.php -f
 RewriteCond %{REQUEST_URI} !/$
 RewriteRule ^(.*)$ 1ドル.php [L]
</IfModule>