介紹

For arbitrary precision mathematics PHP offers the Binary Calculator which supports numbers of any size and precision, represented as strings.

需求

Since PHP 4.0.4, libbcmath is bundled with PHP. You don't need any external libraries for this extension.

安裝

In PHP 4, these functions are only available if PHP was configured with --enable-bcmath. In PHP 3, these functions are only available if PHP was NOT configured with --disable-bcmath.

Windows 版本的 PHP 已內建此延伸的支援﹐所以你毋須再載入附加的延伸來使用這些功能。

執行時期組態

php.ini中的設定會影響這些函數的行為。

這裡為簡短的結構指令說明。

資源類型

這個延伸沒有定義任何資源。

預先定義常數

這個延伸沒有定義任何常數。