php 反射 实例化类

<?php

class Person
{
    public $name;
    public $sex;
    public function __construct($name,$sex=1)
    {
        $this->name = $name;
        $this->sex = $sex;
    }

    public function getName()
    {
        return $this->name;
    }
}

$reflect = new ReflectionClass('Person');
$constructor = $reflect->getConstructor ();
$res = $reflect->newInstanceArgs(['name'=>'wang']) ;

var_dump($res->getName());

?>