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                封裝性:封裝性就是把對象的屬性和行為結合成一個獨立的單位。 封裝一個類需要兩步 第一步是私有化一個類 第二步是用set和get 做出讀取賦值的操作 他的好處是:隱藏類的實現細節,可以方便加入邏輯控制性,限制對屬性的不合理操作,便于修改增強代碼的可維護性。 class Person{ public $name = 'osman'; private $sex = 'sale'; protected $age = '26'; //構造方法,在類實例化時自動調用 public function __construct() { self::connect(); } //靜態方法 static function connect() { echo '聯系我'; } }
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