Is it a common practice among professionals to redirect all page requests to a single entry point like index.php for processing in PHP applications?

It is a common practice among professionals to redirect all page requests to a single entry point like index.php in PHP applications. This approach helps centralize the logic for routing and processing requests, making the codebase easier to maintain and manage. By using this method, you can handle all incoming requests in a single file and then route them to the appropriate controllers or actions based on the request parameters.

```php
// .htaccess file to redirect all requests to index.php
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php [QSA,L]
```

This .htaccess file configuration will redirect all requests to index.php, where you can then handle the requests accordingly based on the URL parameters or other criteria.