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The bc prefix in php bccomp indicates that the function belongs to the BC library of high-precision operations, while the bccomp function compares two numbers of arbitrary precision with the syntax "bccomp(string $num1, string $num2,): int".

Operating environment: Windows 7, PHP 7.1, Dell G3

What does the bc prefix mean in php bccomp?

PHP BC library for high-precision operations.

bccomp

bccomp -Compare two numbers of arbitrary precision

description

bccomp(string $num1, string $num2, ? int $scale = null): int

Compares num1 and num2 and returns the result as an integer number.

parameters

num1

The operand on the left is a string.

num2

The operand on the right is a string.

scale

The optional scale parameter is used to set the indicator number in the decimal point used for comparison.

return value

Returns 0 if two numbers are equal; 1 if num1 is greater than num2;-1 otherwise.

Related Introduction:

BC mathematical functions include:

bcadd -Addition of two numbers of arbitrary precision

bccomp -Compare two numbers of arbitrary precision

bcdiv -Two arbitrary precision numerical division calculations

bcmod -arbitrary precision digital modulo

bcmul -Multiplication of two arbitrary precision numbers

bcpow -Power of an arbitrary precision number

bcpowmod - Raise an arbitrary precision number to another, reduced by a specified modulus

bcscale -sets/gets the default decimal places reserved for all bc math functions

bcsqrt -the square root of an arbitrary precision number

bcsub -Subtraction of two arbitrary precision numbers

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