Options +FollowSymLinks +ExecCGI

RewriteEngine On

# we skip all files with .something
RewriteCond %{REQUEST_URI} \..+$
RewriteCond %{REQUEST_URI} !\.html$
RewriteRule .* - [L]

# we check if the .html version is here (caching)
RewriteRule ^$ index.html [QSA]
RewriteRule ^([^.]+)$ $1.html [QSA]
RewriteCond %{REQUEST_FILENAME} !-f

# no, so we redirect to our front web controller
RewriteRule ^(.*)$ frontend_dev.php5 [QSA,L]

# big crash from our front web controller
ErrorDocument 500 "<h2>Application error</h2>SymFony application failed to start properly"

The requested URL /usr/home/MyAccount/public_html/MyProject/web/frontend_dev.php5 was not found on this server.