__call()和call_user_func_array()

<?php
class Index{
    public function price($day,$price){
        echo "出去旅游".$day."天,总共用了".$price.'元';
    }

}

class Travel{
    public $price;
    public function index(){

    }

    public function __construct()
    {

        $this->price=new Index();
    }


    public function __call($pub,$age){
        if(method_exists($this->price,$pub)){
            call_user_func_array([$this->price,$pub],$age);
        }

    }

}



$travle=new Travel();
$travle->price('10','10000');