Are there any best practices for using ModeRewrite in PHP to avoid issues with directory redirection?

When using ModRewrite in PHP to redirect directories, it's important to avoid creating infinite loops or redirecting to non-existent directories. One way to prevent these issues is to add conditions to your RewriteRule to check if the requested URL matches a physical directory or file before redirecting.

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php?url=$1 [QSA,L]