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                # 魔法函數 1。魔術函數,不需要主動去調用, 進行一些操作的時候,會自動調用 1. \_\_construct(),創建一個對象里,被調用 2. \_\_call(), 調用一個不可訪問方法時調用 3. \_\_callStatic(),用靜態方式中調用一個不可訪問方法時調用 4. \_\_get(),一個類不可訪問的屬性時調用 5. \_\_set(),設置一個類不可以訪問的屬性時調用 6.等等 2。說下最常用的 \_construct吧。 ``` <pre class="calibre11">``` class Book { public $name; protected $costPrice; public function __construct($name, $costPrice) { $this->name = $name; $this->costPrice = $costPrice; } public function save() { print_r("保存完畢: {$this->name} {$this->costPrice}"); } } // new 的時候,會自動調用 __construct 方法,并會值傳遞給它 $book = new Book('php編程', '9.9元'); $book->save(); ``` ```
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