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                ``` 1. 類的成員屬性,就是指某個類具有的公共的特征、特性; 2. 類中定義的變量,就是類的成員屬性; 3. 類的成員屬性和普通變量的區別:類的成員屬性必須要帶權限修飾符,而普通變量不需要 ``` ~~~ class Person { //成員屬性 public $name1; private $name2; protected $name3; } ~~~
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