<?php

$_SERVER['REQUEST_URI'] = '/post/edit/1024?foo=bar';

$uri = explode('/', parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH));

var_export($uri);

//输出

array (

  0 => '',

  1 => 'post', //控制器(控制器存在就require)

  2 => 'edit', //方法

  3 => '1024', //参数(获取参数foo就用传统的$_GET['foo'])

)

$class = $uri[1];

require 'controller/'.$class.'.php'; // controller/post.php

$object = new $class();

$action = $uri[2];

$parameter = $uri[3];

echo call_user_func_array(array($object, $action), array($parameter)); //调用对象里的方法并传参

controller/post.php:

class post {

    public function edit($id) {

        return '$'.__CLASS__.'->'.__FUNCTION__.'('.$id.')'; //输出 $post->edit(1024)

    }

}