我正在为php应用程序创建一个操作挂钩系统。以下是我迄今为止所做的工作。$where
是钩子的名称当一个挂钩位置有多个操作时,$priority
决定所遵循的顺序。(当到达挂钩位置并且我的应用程序核心运行任何挂钩操作时,会调用hook::execute()
)
class hooks{
private $hookes;
function __construct()
{
$hookes=array();
}
function add_action($where,$callback,$priority=50)
{
if(!isset($this->hookes[$where]))
$this->hookes[$where]=array();
$this->hookes[$where][$callback]=$priority;
}
function remove_action($where,$callback)
{
if(isset($this->hookes[$where][$callback]))
unset($this->hookes[$where][$callback]);
}
static function compare($a,$b)
{
return $a>$b?1:-1;
}
function execute($where)
{
if(isset($this->hookes[$where])&&is_array($this->hookes[$where]))
{
usort($this->hookes[$where],"hook::compare");
foreach($this->hookes[$where] as $callback=>$priority)
{
call_user_func($callback);
}
}
}
};
我的问题是在execute($where)
中如何让它接受变量参数列表并在call_user_func($callback);
中传递它们对于要执行的不同调用,回调中可能会传递数量可变的参数。
您可以使用call_user_func_array函数,第二个参数是带参数的数组
试试这个,
Change add_action($where,$callback,$priority=50)
至
add_action($where,Callable $callback,$priority=50) (PHP 5.4)
add_action($where,$callback,$priority=50) ( ALL )
更改
foreach($this->hookes[$where] as $callback=>$priority)
{
call_user_func($callback);
}
至
foreach($this->hookes[$where] as $callback=>$priority)
{
if(is_callable($callback))
{
$callback();
}
//call_user_func($callback);
}
样本代码
$hooks = new hooks();
$hooks->add_action("WHERE",function()
{
//Callback Code
},5);