php mvc框架控制器核心代码

<?php
if(!defined("APPLICATION_MODULE_PARAM")):define("APPLICATION_MODULE_PARAM","m");endif;
if(!defined("APPLICATION_MODULE_BASIC_PATH")):define("APPLICATION_MODULE_BASIC_PATH","");endif;
if(!defined("APPLICATION_CONTROLLER_PARAM")):define("APPLICATION_CONTROLLER_PARAM","c");endif;
if(!defined("APPLICATION_ACTION_PARAM")):define("APPLICATION_ACTION_PARAM","a");endif;
if(!defined("NULL")):define("NULL",null);endif;
class application 
{
private static $application=NULL;
private $module=NULL;
private $controller=NULL;
private $action=NULL;
private function __construct(){}
public static function getInstance()
{
   if(!(self::$application instanceof self)):
    self::$application=new self();
   endif;
   return self::$application;
}
public function run()
{
   $this->module=$_GET[APPLICATION_MODULE_PARAM];
   $this->controller=$_GET[APPLICATION_CONTROLLER_PARAM];
   $this->action=$_GET[APPLICATION_ACTION_PARAM];
   if(!is_dir(APPLICATION_MODULE_BASIC_PATH.$this->module)):
    exit("module ".APPLICATION_MODULE_BASIC_PATH.$this->module." not exist");
   endif;
   if(!file_exists(APPLICATION_MODULE_BASIC_PATH.$this->module.'/'.$this->controller.'.php')):
    exit("controller ".APPLICATION_MODULE_BASIC_PATH.$this->module.'/'.$this->controller.'.php'." not exist");
   endif;
   if(!class_exists($this->controller)):
    include APPLICATION_MODULE_BASIC_PATH.$this->module.'/'.$this->controller.'.php';
   endif;
   $temp=new $this->controller;
   if(!method_exists($temp,$this->action)):
    exit("action $this->action not exist");
   endif;
   return call_user_method($this->action,$temp);
}
}
?>

 

<?php
require'lib/application.cls.php';
$app=application::getInstance();
$app->run();
?>

 

 

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