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.
In PHP 4, these functions are only available if PHP was configured with
In PHP 3, these functions are only available if PHP was not configured with
The behaviour of these functions is affected by settings in php.ini.
Table 1. BC math configuration options
For further details and definition of the PHP_INI_* constants see
Here is a short explanation of the configuration directives.
Number of decimal digits for all bcmath functions.
This extension has no resource types defined.
This extension has no constants defined.