What are the differences between the tutorial followed and the actual implementation of URL rewriting in PHP scripts using .htaccess?

Issue: The tutorial followed for URL rewriting in PHP scripts using .htaccess may not work as expected when implemented. This could be due to incorrect syntax, conflicting rules, or server configurations. To solve this, ensure that the .htaccess file is properly configured with the correct RewriteEngine on directive and RewriteRule for the desired URL structure. PHP code snippet:

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