How can PHP functions be called within HTML links?
To call PHP functions within HTML links, you can use the `href` attribute of the `<a>` tag to specify a PHP script that will be executed when the link is clicked. This allows you to pass parameters to the PHP function and perform actions based on user interactions.
```php
<a href="example.php?function=myFunction">Click me</a>
```
In the above example, clicking the link will execute the `myFunction` PHP function defined in `example.php`. You can then use `$_GET['function']` in `example.php` to determine which function to call.