自己写php框架启动类

单一入口文件：index.php

<?php//入口文件，单一入口//载入核心启动类include "framework/core/framework.class.php";Framework::run();

核心启动类文件：Framework.php

<?php//核心启动类class Framework{//让项目run起来public static function run(){self::init();self::autoload();self::router();}//初始化方法public static function init(){//定义路径，获取当前工作路径 getcwd()define("DS", DIRECTORY_SEPARATOR);define("ROOT", getcwd() . DS);define("APP_PATH", ROOT . "application" . DS);define("FRAMEWORK_PATH", ROOT . "framework" . DS);define("PUBLIC_PATH", ROOT . "public" . DS);define("MODEL_PATH", APP_PATH . "models" . DS);define("VIEW_PATH", APP_PATH . "views" . DS);define("CONTROLLER_PATH", APP_PATH . "controllers" . DS);define("CONFIG_PATH", APP_PATH . "config" . DS);define("CORE_PATH", FRAMEWORK_PATH . "core" . DS);define("DB_PATH", FRAMEWORK_PATH . "database" . DS);define("HELPER_PATH", FRAMEWORK_PATH . "helpers" . DS);define("LIB_PATH", FRAMEWORK_PATH . "libraries" . DS);//前后台的控制器和视图目录怎么定义define("PLATFORM", isset($_REQUEST['p']) ? $_REQUEST['p'] : "home");define("CONTROLLER", isset($_REQUEST['c']) ? ucfirst($_REQUEST['c']) : "Index");define("ACTION", isset($_REQUEST['a']) ? $_REQUEST['a'] : "index");define("CUR_CONTROLLER_PATH", CONTROLLER_PATH . PLATFORM . DS);define("CUR_VIEW_PATH", VIEW_PATH . PLATFORM . DS);}//路由方法public static function router(){//确定类名和方法名$controller_name = CONTROLLER . "Controller";  //如GoodsController$action_name = ACTION . "Action";  //如addAction//实例化控制器，然后调用相应的方法$controller = new $controller_name;$controller -> $action_name();}//自动加载方法public static function autoload(){spl_autoload_register(array(__CLASS__, "load"));}//加载方法public static function load($classname){//只负责加载 application 下面的 控制器类和模型类， 如GoodsController， AdminModelif(substr($classname, -10) == 'Controller'){require CUR_CONTROLLER_PATH . "{$classname}.class.php";} elseif(substr($classname, -5) == 'Model') {require MODEL_PATH . "{$classname}.class.php";} else {}}}?>