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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 decbin() 函數 ## 定義和用法 decbin() 函數把十進制轉換為二進制。 ### 語法 ``` decbin(dec_number) ``` | 參數 | 描述 | | --- | --- | | dec_number | 必需。規定要轉換的十進制數。 | ### 說明 返回一個字符串,包含有給定 _dec_number_ 參數的二進制表示。所能轉換的最大數值為十進制的 4294967295,其結果為 32 個 1 的字符串。 ## 例子 ``` <?php echo decbin("3"); echo decbin("1"); echo decbin("1587"); echo decbin("7"); ?> ``` 輸出: ``` 11 1 11000110011 111 ```
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