In the provided code snippet, what is the significance of the RewriteRule in the .htaccess file and how does it impact the functionality of the PHP script?

The RewriteRule in the .htaccess file is used to redirect URLs to a specific location or format. In this case, the RewriteRule is used to redirect all requests to the index.php file, allowing for clean URLs and enabling the PHP script to handle the routing and processing of different requests. This RewriteRule is crucial for the functionality of the PHP script as it ensures that all incoming requests are properly directed to the appropriate script for processing.

RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php [L]