.htaccess how can I implement both "vanity url" and "no extension" - .htaccess

Question

I'm using htaccess from stackoverflow.com/q/8583856 -
RewriteEngine on
# Unless directory, remove trailing slash
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^/]+)/$ http://www.mysite.com/$1 [R=301,L]
# Redirect external .php requests to extensionless url
RewriteCond %{THE_REQUEST} ^(.+)\.php([#?][^\ ]*)?\ HTTP/
RewriteRule ^(.+)\.php$ http://www.mysite.com/$1 [R=301,L]
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^(.*)$ $1.php [L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule .* - [L]
RewriteRule ^(.*)$ http://www.mysite.com/profile.php?u=$1 [NC]
Everything works great unless I type www.mysite.com into address bar -
returns mysite.com/profile?u=index.html.var
which errors "Unknown column index.html.var in where clause"
Anyone know how to get this to go to mysite.com/index instead?

Answer 1

Change your code to this and let me know how it behaves (after clearing your browser cache):
Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /
# Unless directory, remove trailing slash
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)/$ $1 [R=302,L]
# Redirect external .php requests to extensionless url
RewriteCond %{THE_REQUEST} ^(.+)\.php([#?][^\ ]*)?\ HTTP/
RewriteRule ^(.+)\.php$ $1 [R=302,L]
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^(.*)$ $1.php [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^(.*)$ profile.php?u=$1 [NC,L]
Once you're sure it is working then change R=302 to R=301

Answer 2

try adding a condition to check if the path is empty (i.e. root)
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d [OR]
RewriteCond $0 ^$
RewriteRule .* - [L]