创建一个mvc应用目录架构并创建入口文件index.php

abstract：<?php require 'vendor/autoload.php'; require 'pig/Base.php'; define('ROOT_PATH',__DIR__.'/'); $config=require 'pig/config.php'; $queryStr=$_S

<?php
require 'vendor/autoload.php';
require 'pig/Base.php';
define('ROOT_PATH',__DIR__.'/');

$config=require 'pig/config.php';
$queryStr=$_SERVER['REQUEST_URI'];
(new \pig\Base($config,$queryStr))->run();

框架入口文件 index.php 打开执行后实例化框架基础类的调试状态，自动加载类文件如：当用户提供：php.edu/demo/index/a 后框架自动加载检测准备new的类生成绝对路径.

D:\myphp_www\PHPTutorial\WWW\php.edu/pig/Route.php
D:\myphp_www\PHPTutorial\WWW\php.edu/app/admin/controller/Index.php

<?php
/**
 *  * 框架基础类
 * 1. 调试模式
 * 2. 自动加载
 * 3. 启动框架
 */

namespace pig;


class Base
{
    protected  $config=[];
    protected  $queryStr='';
    public function __construct($config,$queryStr)
    {
        $this->config=$config;
        $this->queryStr=$queryStr;
    }

    public function setDebug()
    {
        if($this->config['app']['debug']){
            error_reporting(E_ALL);
            ini_set('display_errors','On');
        }else{
            error_reporting(E_ALL);
            ini_set('display_errors','off');
            ini_set('log_errors','On');
        }
    }

    public function loader($class)
    {

       $path = ROOT_PATH.str_replace('\\','/',$class).'.php';
        echo $path.'<br>';
        if (!file_exists($path)){
            header('Location:/');
        }
        require $path;
    }

    public function run()
    {
        $this->setDebug();
        spl_autoload_register([$this,'loader']);
        echo(new Route($this->config['route']))->parse($this->queryStr)->dispatch();
    }

}

<?php
/**
*路由、分发类
 */
namespace pig;

class Route
{
//    protected $route = [];
    public $route = [];

//    protected $pathInfo=[];
    public $pathInfo=[];

//    protected $params=[];
    public $params=[];


    public function __construct($route)
    {
        $this->route=$route;
    }

    public function parse($queryStr='')
    {
        $queryStr=trim(strtolower($queryStr),'/');
        $queryArr=explode('/',$queryStr);
        $queryArr=array_filter($queryArr);

        switch (count($queryArr))
        {
            case 0:
                $this->pathInfo =$this->route;
                break;

            case 1:
                $this->pathInfo['module']=$queryArr[0];
                break;

            case 2:
                $this->pathInfo['module']=$queryArr[0];
                $this->pathInfo['controller']=$queryArr[1];
                break;

            case 3:
                $this->pathInfo['module']=$queryArr[0];
                $this->pathInfo['controller']=$queryArr[1];
                $this->pathInfo['action']=$queryArr[2];
                break;

            default:
                $this->pathInfo['module']=$queryArr[0];
                $this->pathInfo['controller']=$queryArr[1];
                $this->pathInfo['action']=$queryArr[2];

                $arr=array_slice($queryArr,3);
                for ($i=0;$i<count($arr);$i +=2){
                    if (isset($arr[$i+1])){
                        $this->params[$arr[$i]]=$arr[$i+1];
                    }
                }
                break;
        }
         return $this;
    }

    public function dispatch()
    {
        $module=$this->pathInfo['module'];
        $controller='\app\\'.$module.'\controller\\'.$this->pathInfo['controller'];
        $action = $this->pathInfo['action'];
//        new $controller;
        if(!method_exists($controller,$action)){
            $action=$this->route['action'];
            header('Location:/');
        }

       return call_user_func_array([new $controller,$action],$this->params);
    }
}

<?php
/**
 * Created by PhpStorm.
 * User: 普通用户
 * Date: 2019/5/13
 * 
 */

namespace app\demo\controller;


class index
{
    public function a()
    {
        echo "demo->index->a";
    }
}

Correcting teacher：天蓬老师Correction time：2019-05-13 09:17:42
Teacher's summary：通过这个小框架 , 相信你对一个php框架的运行的基本流程有了一个大致的了解... 一个真实商用的php框架, 它的复杂度远高于这个教学框架, 但是底层的原理与架构, 与这个并无本质区别.. 掌握 这个小框架的编程思想和思维模式, 对于你以后学习成熟的框架开发, 如laravel, thinkphp,ci, yii等, 非常有好处的, 加油...