What are some best practices for dynamically triggering functions in PHP when clicking on multiple buttons?

When dynamically triggering functions in PHP when clicking on multiple buttons, it is best to use JavaScript to handle the button clicks and make AJAX requests to trigger the PHP functions. This way, you can keep the PHP functions separate and only execute the necessary function based on the button clicked.

```php
<?php
if(isset($_POST['action'])){
    $action = $_POST['action'];

    if($action == 'function1'){
        // Call function1
    } elseif($action == 'function2'){
        // Call function2
    }
}
?>
```

In this code snippet, we check for the 'action' parameter sent via POST request. Depending on the value of 'action', we can call the respective PHP functions. This allows us to dynamically trigger functions based on the button clicked.