Illustrating how to optionally support named argument arrays in PHP methods

named_arguments.php

<?php

function getFriends(
	$user_id = null,
	$screen_name = null,
	$cursor = -1,
	$skip_status = false,
	$include_user_entities = false
) {
	// Support optionally named parameters via an array
	if (func_num_args() === 1 && is_array(func_get_arg(0)))
	{
		extract(func_get_arg(0));
	}

	// do stuff...
}