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PHP中使用反射机制实现动态代理

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Release: 2016-06-21 08:57:09
Original
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演示用代码如下所示

classClassOne{
  functioncallClassOne(){
    print"InClassOne";
  }
}
classClassOneDelegator{
  private$targets;
  function__construct(){
    $this->target[]=newClassOne();
  }
  function__call($name,$args){
    foreach($this->targetas$obj){
      $r=newReflectionClass($obj);
      if($method=$r->getMethod($name)){
        if($method->isPublic()&&!$method->isAbstract()){
          return$method->invoke($obj,$args);
        }
      }
    }
  }
}
$obj=newClassOneDelegator();
$obj->callClassOne();
?>

  输出结果:

  In Class One

  可见,通过代理类ClassOneDelegator来代替ClassOne类来实现他的方法。

  同样的,如下的代码也是能够运行的:

classClassOne{
  functioncallClassOne(){
    print"InClassOne";
  }
}
classClassOneDelegator{
  private$targets;
  functionaddObject($obj){
    $this->target[]=$obj;
  }
  function__call($name,$args){
    foreach($this->targetas$obj){
      $r=newReflectionClass($obj);
      if($method=$r->getMethod($name)){
        if($method->isPublic()&&!$method->isAbstract()){
          return$method->invoke($obj,$args);
        }
      }
    }
  }
}
$obj=newClassOneDelegator();
$obj->addObject(newClassOne());
$obj->callClassOne();
?>



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