call_user_func和call_user_func_array函数

<?php

function test($a,$b)
{
    echo "love"."----".$a."----".$b."<br>";
}

call_user_func('test','star','shine');   //用call_user_func调用函数
call_user_func_array('test',["a","b"]);   //用call_user_func_array调用函数

class Dog
{
    function wang()
    {
        echo "初·绝杀<br>";
    }
    function rock ()
    {
        call_user_func([$this,"wang"]);    //call_user_func([$this,"wang"])就等同于$this->wang();
        echo "真·必杀<br>";
    }
}

$dog = new Dog;
$dog->rock();
call_user_func([$dog,"wang"]);     //用call_user_func调用类里面的方法
?>