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                # PHP shuffle() 函數 ## 定義和用法 shuffle() 函數把數組中的元素按隨機順序重新排列。 若成功,則返回 TRUE,否則返回 FALSE。 注釋:本函數為數組中的單元賦予新的鍵名。這將刪除原有的鍵名而不僅是重新排序。 注釋:自 PHP 4.2.0 起,不再需要用 srand() 或 mt_srand() 函數給隨機數發生器播種,現已被自動完成。 ### 語法 ``` shuffle(array) ``` | 參數 | 描述 | | --- | --- | | array | 必需。規定要使用的數組。 | ## 例子 ``` <?php $my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse"); shuffle($my_array); print_r($my_array); ?> ``` 輸出: ``` Array ( [0] => Cat [1] => Horse [2] => Dog ) ```
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