class Ball{
 public function down(){
 echo  "ball is downing ";
 //注冊(cè)事件
 Hook::add("man");
 Hook::add("Women");
 }
 public function do(){
 Hook::exec();
 }
}
// 鉤子的定義
class Hook{
 private $hooklist = null ;
 // 添加
 public function add($people){
 $this->hooklist[] = new $people();
 }
 // 觸發(fā)事件
 public function exec(){
 foreach($this->hooklist as $people){
   $addon ->act();
 }
 }
}
// 鉤子實(shí)現(xiàn)
class man(){
 public function act(){
 echo 'notiong';
 }
}
class WoMan(){
 public function act(){
 echo 'oh my god ';
 }
}
class child(){
 public function act(){
 echo 'oh my god ';
 }
}
$ball = new Ball();
$ball ->down();
$ball ->do();

// 如果需要添加小孩,就可以做添加一個(gè)小孩Hook::add("child");
 /*=========================鉤子的升級(jí)版============================================/*
class Hook{
  private $hookList;
  //添加
 function add($name,$fun){
 $this->hookList[$name][] = $fun;
 }
function excec($name){
  $value = func_get_args();
  unset($value[0]);
  foreach ($this->hookList[$name] as $key => $fun) {
    call_user_func_array($fun, $value);
  }
}
}
$hook = new Hook();
$hook->add('women',function($msg){
 echo 'oh my god'.$msg ;
})
$hook->add('man',function($msg){
 echo 'nothing'.$msg ;
})
// 執(zhí)行
$hook->excec('man','taoge');
$hook->excec('women','xxx');