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" INI_ALL  
For further details and definitions of the 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.