The behaviour of these functions is affected by settings in php.ini.
BC math configuration options
|Name ||Default ||Changeable ||Changelog |
|bcmath.scale ||"0" ||PHP_INI_ALL || |
For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set
Here's a short explanation of the configuration directives.
Number of decimal digits for all bcmath functions. See also bcscale().