How can PHP developers create a status page to provide users with an overview of the script's progress in processing search requests and sending notifications?

To create a status page for users to track the progress of search requests and notifications in a PHP script, developers can utilize a combination of session variables and AJAX requests to update the page dynamically without the need for manual refreshing.

```php
<?php
session_start();

// Set initial status
$_SESSION['status'] = 'Processing search requests...';

// Update status as needed
$_SESSION['status'] = 'Sending notifications...';

// AJAX request to update status on the front end
if(isset($_GET['getStatus'])) {
    echo $_SESSION['status'];
    exit;
}
?>
```

This code snippet demonstrates how PHP developers can use session variables to store and update the status of the script's progress, and then utilize AJAX requests to fetch and display the status dynamically on the front end without the need for manual refreshing.