一个php框架的简单实现，仅实现简单路由层

首先看一下现有的文件目录

DOCUMENT_ROOR 为 /home/www目录

然后看一下入口文件的内容

<?php$controll_action = $_GET['_ca_'];$params  = explode('/',$controll_action);$params_count = count($params);$otherParams = $params;if($params_count>1) {$controller = $params[0];$action  = $params[1];unset($params[0]);unset($params[1]);}else if($params_count==1) {$controller = $params[0];$action = 'index';unset($params[0]);}$filename = strtolower($controller).'.php';$controller_path = $_SERVER['DOCUMENT_ROOT'].'/application/controllers/';if(!file_exists($controller_path.$filename)) {throw new Exception('controller '.$filename.' is not exists!');return;}include($controller_path.$filename);$classname = ucfirst($controller);if(!class_exists($classname)) {throw new Excpetion('class '.$classname.' is not exists!');}$reflecObj = new ReflectionClass($classname);if(!$reflecObj->hasMethod($action)){throw new Exception('method '.$action.' is not exists!');}$currentObj = new $classname();echo "classname=$classname,action=$action,params=".json_encode($params)."<br/>";call_user_func_array([$currentObj,$action],$params);return;?>

然后创建一个简单的控制器 user.php,放到applicaiton/controllers/目录下，具体内容如下：

<?phpclass User {        function __construct(){            }    public function index($name='')    {    echo 'hello,'.$name.',lucky,you are arrive here!';    }}

最后测试一个正确的控制器跳转和错误的控制器跳转

首先测试一下正确的流程： http://192.168.1.99/user/index/xiaoming

输出内容：

classname=User,action=index,params={"2":"xiaoming"} hello,xiaoming,lucky,you are arrive here!

再测试一下不存在的控制器,http://192.168.1.99/account/index/xiaoming

Fatal error: Uncaught exception 'Exception' with message 'controller acount.php is not exists!' in /home/www/webroot/index.php:25Stack trace:#0 {main} thrown in /home/www/webroot/index.php on line 25

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