How can PHP functions like file_get_contents be utilized effectively in developing an offline reader for web pages?

To develop an offline reader for web pages using PHP functions like file_get_contents, you can use this function to fetch the HTML content of a webpage and store it locally. This way, users can access the webpage even when offline by loading the locally stored content.

```php
$url = 'https://www.example.com/page.html';
$html_content = file_get_contents($url);

$file_path = 'offline_page.html';
file_put_contents($file_path, $html_content);
```

In this code snippet, we first use `file_get_contents` to fetch the HTML content of the webpage at the specified URL. Then, we use `file_put_contents` to save this content to a local file, allowing users to access the webpage offline by loading the locally stored HTML file.