For arbitrary precision mathematics PHP offers the Binary Calculator which supports numbers of any size and precision, represented as strings.
Since PHP 4.0.4, libbcmath is bundled with PHP. You don't need any external libraries for this extension.
These functions are only available if PHP was
In PHP 3, these functions are only available if PHP was not
The windows version of PHP has built in support for this extension. You do not need to load any additional extension in order to use these functions.
The behaviour of these functions is affected by settings in
For further details and definitions of the PHP_INI_* constants, see the Appendix I,
Here's a short explanation of the configuration directives.
Number of decimal digits for all bcmath functions. See also bcscale().
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