php学习：第14章 对象序列化与实战案例

对象序列化与sleep(), wackup()

class lei 
{
    protected $name = '王小飞';
    public $sex = '男';
    protected $age = 20;
    private $isMarried = false;
    //__sleep()返回自定义的属性
    public function __sleep(): array
    {
        return ['age', 'sex'];
    }
    //__wakeup()更新属性值
    public function __wakeup()
    {
        $this->age = 26;
        $this->sex = '不告诉你';
    }
}
$lei = new lei();
//打印自定义属性
echo serialize($lei);
//把序列化内容保存变量里面
$xulie = serialize($lei);
//字符串打印反序列化 更新属性
var_dump(unserialize($xulie));

匿名类案例

    function ff(object $user, string $name)
    {
        return $user->write($name);
    }
    //new一个匿名类
    echo ff(new class (){
        public function write($name)
        {
            return '你好' . $name;
        }
    }, '王小飞');

总结：感觉越来越难了，继续加油！