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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # PHP range() 函數 ## 定義和用法 range() 函數創建并返回一個包含指定范圍的元素的數組。 ### 語法 ``` range(first,second,step) ``` | 參數 | 描述 | | --- | --- | | first | 必需。規定數組元素的最小值。 | | second | 必需。規定數組元素的最大值。 | | step | 可選。規定元素之間的步進制。默認是 1。注釋:該參數是 PHP 5 中加入的。 | ### 說明 該函數創建一個數組,包含從 first 到 second (包含 first 和 second)之間的整數或字符。如果 second 比 first 小,則返回反序的數組。 ## 例子 1 ``` <?php $number = range(0,5); print_r ($number); ?> ``` 輸出: ``` Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 ) ``` ## 例子 2 ``` <?php $number = range(0,50,10); print_r ($number); ?> ``` 輸出: ``` Array ( [0] => 0 [1] => 10 [2] => 20 [3] => 30 [4] => 40 [5] => 50 ) ``` ## 例子 3 ``` <?php $letter = range("a","d"); print_r ($letter); ?> ``` 輸出: ``` Array ( [0] => a [1] => b [2] => c [3] => d ) ```
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