MVC框架-前端控制器-原理
<?php
/**
* @name :前端控制器.front.php
* @author :PHPCQ.COM
*
*/
class FrontController{
protected $_controller,$_action,$_params,$_body;
static $_instance;
public static function getInstance(){
if (!(self::$_instance instanceof self)) {
self::$_instance = new self();
}
return self::$_instance;
}
private function __construct(){
$request = $_SERVER['REQUEST_URI'];
$splits = explode('/',trim($request,'/'));
$this->_controller = !empty($splits[0])?$splits[0]:'index';
$this->_action = !empty($splits[1])?$splits[1]:'index';
if (!empty($splits[2])) {
$keys = $values = array();
for ($index = 2,$cnt = count($splits);$idx < $cnt;$idx++){
if ($idx % 2 == 0) {
$keys[] = $splits[$idx];
} else {
$values[] = $splits[$idx];
}
}
$this->_params = array_combine($keys,$values);
//print_r($this->_params);
}
}
public function route(){
if (class_exists($this->getController())) {
$rc = new ReflectionClass($this->getController());
if ($rc->implementsInterface('IController')) {
if ($rc->hasMethod($this->getAction())) {
$controller = $rc->newInstance();
$method = $rc->getMethod($this->getAction());
$method->invoke($controller);
} else {
throw new Exception("Action");
}
} else {
throw new Exception("Interface");
}
} else {
throw new Exception("Controller");
}
}
public function getParams(){
return $this->_params;
}
public function getController(){
return $this->_controller;
}
public function getAction(){
return $this->_action;
}
public function getBody(){
return $this->_body;
}
public function setBody($body){
$this->_body = $body;
}
}
