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bcsub - Subtract one arbitrary precision number from another

bcsub( string$num1, string$num2, [int|null$scale = null] ): string

Subtracts the num2 from the num1.



The left operand, as a string.


The right operand, as a string.


This optional parameter is used to set the number of digits after the decimal place in the result. If omitted, it will default to the scale set globally with the bcscale function, or fallback to 0 if this has not been set.

Return Values

The result of the subtraction, as a string.


Version Description
8.0.0 scale is now nullable.

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Function bcsub:

BCMath Arbitrary Precision Mathematics Functions

Most used PHP functions