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                ### 概述 所謂的靜態成員,總的來說,就是指該成員(屬性或方法)不屬于某個對象“獨自”占有,而是所有的對象所共享的成員! 既然是屬于所有對象共有的成員,那么語法的實現上就應該通過類來進行管理并通過類進行訪問靜態成員(因為所有的對象都是某一個類的實例) ### 靜態屬性訪問 ~~~ 類名::屬性名 //屬性名要加$符號 ~~~ ### 實例 ~~~ class Student{ public static $number = 0; public $name; public function __construct($name) { $this->name = $name; self::$number++; } } $stu1 = new Student("jack"); $stu1 = new Student("milan"); $stu1 = new Student("mark"); echo Student::$number; ~~~ ~~~ 3 ~~~
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