根据osc上的@hoohle 的代码修改的。
地址：http://www.oschina.net/code/snippet_186535_24755
发现代码在部分地方没讲清楚，自己完善了一些
teardown --> open --> setup --> packing. * * 例如调用source->doxx(),各个流程将是: * unpacking: 解包. 这是调用任意source的函数都会调用的方法; * teardown: 撕掉饰品. 对于wrapper中的每个decoration,调用其before()函数; * open: 真正调用source->doxx()函数; * setup: 重新贴上饰品. 对于wrapper中的每个decoration,调用其after()函数; * packing: 重新打包. 这是调用任意source的函数都会调用的方法; * */class wrapper{ private $source; /** * @var bool */ private $undecorated; /** * @var array[decoration] */ private $decorations=array(); public function __construct($source){ $this->source = $source; } public function __call($name,$parameters){ $this->unpacking($name,$parameters); $this->teardown($name,$parameters); //opening $retval = $this->opening($name,$parameters); $this->setup($retval,$name,$parameters); $this->packing($retval,$name,$parameters); return $retval; } public function unpacking($name,$parameters){ } public function packing($name,$parameters){ } private function opening($name,$parameters){ // opening if(method_exists($this->source, $name)){ $retval = call_user_func_array(array($this->source,$name),$parameters); } return $retval; } public function teardown($name,$parameters){ if($this->undecorated){ return; } $before='before'; foreach ($this->decorations as $d){ if(method_exists($d, $before)) { $d->$before($name,$parameters); } } } public function setup($retval,$name,$parameters){ if($this->undecorated){ return ; } $after='after'; foreach ($this->decorations as $d){ if(method_exists($d, $after)) { $d->$after($retval,$name,$parameters); } } } public function decarate($decoration){ $this->decorations[] = $decoration; } public static function wrap($source){ // wrap the source $wrapperconfig = aop::app()->wrappers[get_class($source)]; if($wrapperconfig){ $wrapperclass = $wrapperconfig['class']; $wrapper = new $wrapperclass($source); foreach ($wrapperconfig['decorations'] as $item){ if(class_exists($item)){ $decoration = new $item; $wrapper->decarate($decoration); } } } return $wrapper?$wrapper:$source; }}?>
aop测试wrappers=array( 'contentservice'=>array( 'class'=>'contentwrapper', 'decorations'=>array( 'dasaicontentdecoration', ) ), 'aopworker'=>array(//for test 'class'=>'diagnosiswrapper', 'decorations'=>array( 'dasaidiagnosisdecoration' ), ), ); } public static function app(){ return new aop(); }}class aopworker{ public function testaop(){ echo '
这里是调用的地方
'; return 'ok'; }}class diagnosiswrapper extends wrapper{ public function unpacking($name, $parameters){ echo diagnosiswrapper:喂,有人调用$name,我要解包了.
; } public function packing($retval,$name, $parameters){ echo diagnosiswrapper:喂,调用$name,结果为$retval,重新打包好了.
; }}class dasaidiagnosisdecoration { public function before($name,$parameters){ echo dasaidiagnosisdecoration:开始调用$name , 信息 ：$parameters[0] 已经告诉张三李四了.
; } public function after($retval,$name,$parameters){ echo
dasaidiagnosisdecoration:结束调用$name,告诉霍金和sheldon了.
; }}function testaop(){// test aop 测试入口 $aop = wrapper::wrap(new aopworker()); $aop->testaop(33347);}testaop();?>