Runtime Configuration

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.

bcmath.scale int
Number of decimal digits for all bcmath functions. See also bcscale().