网学网PHP编辑为广大网友搜集整理了：仿AS3实现PHP 事件机制实现代码绩等信息，祝愿广大网友取得需要的信息，参考学习。

复制代码 代码如下:
<?php
/**
* 事件异常
*
* @author lonely
* @create 2010-10-21
* @version 0.1
* @lastupdate lonely
* @package Event
*/
class Exception_Event extends Exception {}
/**
* 事件对象
*
* @author lonely
* @create 2010-10-21
* @version 0.1
* @lastupdate lonely
* @package Event
*/
class Event extends stdClass{
public $target=null;
public $type=null;
/**
* 创建事件
* @param string $type
*/
public function __construct($type){
$this->type=trim($type);
}
/**
* 得到事件字符串
*/
public function __toString(){
return $this->type;
}
}
/**
* 事件派发
*
* @author lonely
* @create 2010-10-21
* @version 0.1
* @lastupdate lonely
* @package Event
*/
class EventDispatcher{
private callback_method;
/**
* 添加事件
* @param Event $event
* @param string $method
* @param string||object $class
* @return boolean true
*/
public function attach(Event $event,$method,$class=null){
$event->target=$this;
$eventstr=$this->_create_event_str($event);
if($this->has($event,$method,$class))
return true;
if($class!=null){
$this->_check_method($class,$method);
$this->_callback_method[$eventstr][]=$this->_create_listener_method($eventstr,$class,$method);
}else{
$this->_check_function($method);
$this->_callback_method[$eventstr][]=$this->_create_listener_fn($eventstr,$method);
}
return true;
}
/**
* 派发事件
* @param Event $event
* @param string $method
* @param string||object $class
* @return void
*/
public function dispatch(Event $event){
$eventstr=$this->_create_event_str($event);
if($this->_check_callback($eventstr)){
foreach ($this->_callback_method[$eventstr] as $v){
if($v[''object'']){
if(is_object($v[''class''])){
$v[''class'']->$v[''method'']($event);
}else{
call_user_func(array($v[''class''], $v[''method'']),$event);
}
}else{
$v[''function'']($event);
}
}
}
}
/**
* 删除事件
* @param Event $event
* @param string $method
* @param string $class
* @return boolean true
*/
public function detact(Event $event,$method,$class=null){
$eventstr=$this->_create_event_str($event);
if(!$this->_check_callback($eventstr))
return true;
if(!$this->has($event,$method,$class))
return true;
if($class!=null){
$this->_check_method($class,$method);
foreach ($this->_callback_method[$eventstr] as $k=>$v) {
if(($v==$this->_create_listener_method($eventstr,$class,$method))){
unset($this->_callback_method[$eventstr][$k]);
return true;
}
}
return true;
}else{
$this->_check_function($method);
foreach ($this->_callback_method[$eventstr] as $k=>$v) {
if(($v==$this->_create_listener_fn($eventstr,$method))){
unset($this->_callback_method[$eventstr][$k]);
return true;
}
}
return true;
}
}
/**
* 检测事件是否监听
* @param Event $event
* @param string $method
* @param string $class
* @return boolean
*/
public function has(Event $event,$method,$class=null){
$eventstr=$this->_create_event_str($event);
if(($class!=null)){
$this->_check_method($class,$method);
if($this->_check_callback($eventstr)){
foreach($this-