各位老哥圣诞节快乐

// 缺一个妹子

// 缺一个妹子

<?php

class MeiZi
{
    public $age = 24;

    public $height = 175;

    public $weight = 45;

}

<?php

class BeautifulGirl
{
    protected int $age;

    protected int $height = 0;

    protected int $width = 0;

    public function setAge ( int $age )
    {
        $this->age = $age;
    }

    public function setHeight ( int $height = 0 )
    {
        $this->height = $height;
    }

    public function setWidth ( int $width = 0 )
    {
        $this->width = $width;
    }
}

$beautiful_girl =  new BeautifulGirl();
$beautiful_girl->setAge ( 18 );
$beautiful_girl->setAge ( 19 );
$beautiful_girl->setAge ( 20 );