Question

I am creating a action-hook system for a php application.
Here is what I have done so far.
$where is the name of the hook
$priority decides the order followed when there are more than one actions for one hook location.
(hook::execute() is called when a hook location is reached and my application core runs any hooked actions)

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);
            }
        }
    }
};

My question is what to do in execute($where) to have it accept a variable argument list and pass them in call_user_func($callback);
For different calls to execute, there may be variable number of parameters to be passed in the callback.

Answer 1

You can use call_user_func_array function, second argument is array with arguments