Rewriting site.com/section.php?username=xyz to site.com/xyz/section

Using the following htaccess, I have been able to rewrite site.com/profile.php?username=xyz to site.com/xyz,

RewriteEngine On
RewriteRule ^([a-zA-Z0-9_-]+)$ profile.php?user=$1
RewriteRule ^([a-zA-Z0-9_-]+)/$ profile.php?user=$1

Adding the following to the above,

RewriteRule ^([a-zA-Z0-9_-]+)/section$ section.php?user=$1
RewriteRule ^([a-zA-Z0-9_-]+)/section/$ section.php?user=$1

did not resolve site.com/section.php?username=xyz to site.com/xyz/section. Am I doing anything wrong here?

RewriteRule ^([a-zA-Z0-9_-]+)$ profile.php?user=$1

is probably messing it up, making profile.php try to take all the URLs. Try changing the order of it...

Options +FollowSymLinks +Indexes

RewriteEngine on

RewriteBase /

RewriteRule ^([a-zA-Z0-9_-]+)/section$ section.php?user=$1

RewriteRule ^([a-zA-Z0-9_-]+)/section/$ section.php?user=$1

RewriteRule ^([a-zA-Z0-9_-]+)$ profile.php?user=$1

RewriteRule ^([a-zA-Z0-9_-]+)/$ profile.php?user=$1

and if that doesn't do it, making something unique in the URL should make it work.

Options +FollowSymLinks +Indexes

RewriteEngine on

RewriteBase /

RewriteRule ^([^.]+)/section/$ section.php?user=$1 [L]

RewriteRule ^([^.]+)/section$ section.php?user=$1 [L]

RewriteRule ^([^.]+)/profile/$ profile.php?user=$1 [L]

RewriteRule ^([^.]+)/profile$ profile.php?user=$1 [L]

Though most sites have it in the other order, like

RewriteRule ^profile/([^.]+)/$ profile.php?user=$1 [L]