Naming regulation

<?php

define('WWW_AAA', 1);
/**
 * 
 * @author U
 */
class UserController extends Controller {
	
	public static $user_name = "";
	
	const NAME_PREFIX = "USER";
	
	public $attr_axy = "";
	
	public function loginAction() {
		$test_who_u_r = true;
	}
	
	public static function getInstance() {
		
	}
}

function get_ip() {
	
}

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相信已经描述清楚