PHP之AOP思想

<?php
class BIZ
{
     public function foobar($num)
     {
          print_r($num);
          echo "\n业务逻辑 do something";
     }
}


class AOP{
     private $instance;
     public function __construct($instance){
          $this->instance = $instance;
     }


     public function __call($method,$argument) {
          if (!method_exists($this->instance, $method)) {
               throw new Exception(‘未定义的方法：‘ . $method);
          }
          echo "\n权限检查"; //--------------AOP
          $callBack = array($this->instance,$method);
          $return = call_user_func($callBack,$argument);
          echo "\n日志记录"; //--------------AOP
          return $return;
     }
}


class Factory
{
     public static function getBizInstance()
     {
          return new AOP(new BIZ());
     }
}


try {
     $obj = Factory::getBizInstance();
     $obj->foobar(3);
} catch (Exception $e) {
     echo ‘Exception ‘.$e->getMessage();
}