What role does the server configuration play in determining the functionality of different file extensions in PHP scripts?

The server configuration plays a crucial role in determining the functionality of different file extensions in PHP scripts by specifying which files should be treated as PHP scripts. To ensure that all desired file extensions are processed as PHP scripts, you can configure the server to recognize additional file extensions by modifying the server's configuration file.

<FilesMatch "\.(php|file_extension)$">
    SetHandler application/x-httpd-php
</FilesMatch>