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
&lt;a href=&quot;example.php?function=myFunction&quot;&gt;Click me&lt;/a&gt;
```

In the above example, clicking the link will execute the `myFunction` PHP function defined in `example.php`. You can then use `$_GET[&#039;function&#039;]` in `example.php` to determine which function to call.