__sleep 与 __wakeup

<?php
class SleepWakeUp
{
    public $name;
    public function __construct($name)
    {
        $this->name = $name;
    }
    public function getName()
    {
        echo $this->name . PHP_EOL;
    }
    /**
     * serialize() 函数时触发
     * @throws Exception
     */
    public function __sleep()
    {
        throw new \Exception('34', 111);
    }
    /**
     * unserialize() 触发
     * @throws Exception
     */
    public function __wakeUp()
    {
        throw new \Exception('34', 111);
    }
}
$aa = new SleepWakeUp('long');
$bb = serialize($aa);
$cc = unserialize($bb);
var_dump($aa);
var_dump($bb);
var_dump($cc);
$aa->getName();
$cc->getName();