What does the bc prefix in php bccomp mean?

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

The operating environment of this article: Windows7 system, PHP7.1 version, Dell G3 computer

php The meaning of the bc prefix in bccomp is What?

PHP high-precision operation BC function library.

bccomp

bccomp — Compares two arbitrary-precision numbers

Description

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

Compares num1 and num2, and returns an integer type numeric result.

Parameter

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 part used for comparison.

Return value

Returns 0 when the two numbers are equal; returns 1 when num1 is larger than num2; otherwise returns -1.

Related introduction:

BC mathematical functions are:

bcadd — Addition calculation of two arbitrary precision numbers

bccomp — Compare two arbitrary-precision numbers

bcdiv — Divide two arbitrary-precision numbers

bcmod — Modulo an arbitrary-precision number

bcmul — Multiply two arbitrary-precision numbers Compute

bcpow — Raise an arbitrary precision number to another, reduced by a specified modulus

bcscale — Set/get all bc math The default number of decimal points retained by the function

bcsqrt — the square root of an arbitrary precision number

bcsub — the subtraction of two arbitrary precision numbers

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