function test($param1, $param2) { echo "Parameter 1: " . $param1; echo "Parameter 2: " . $param2; } $action = 'test'; $args = array('hello', 'world'); call_user_func_array($action, $args);In this example, the Action execute function is used to call the `test` function with two parameters 'hello' and 'world'. The package library for this function is the PHP core library, as it is a built-in function in PHP itself.