What potential issues can arise when using .htaccess for URL rewriting in PHP?

One potential issue when using .htaccess for URL rewriting in PHP is that the rewrite rules may not work as expected due to conflicts with other rules or server configurations. To solve this, it is important to carefully test the rewrite rules and ensure they are written correctly to avoid conflicts.

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