bccomp

(PHP 4, PHP 5, PHP 7, PHP 8)

bccomp — Compare two arbitrary precision numbers

Description

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

Compares num1 to num2 and returns the result of the comparison as an integer.

Parameters

num1

The left operand, as a string.

num2

The right operand, as a string.

scale
This parameter is used to set the number of digits after the decimal place in the result. If null, it will default to the default scale set with bcscale(), or fallback to the value of the bcmath.scale INI directive.

Return Values

Returns 0 if both operands are equal, 1 if num1 is greater than num2, -1 otherwise.

Errors/Exceptions

This function throws a ValueError in the following cases:

  • num1 or num2 is not a well-formed BCMath numeric string.
  • scale is outside the valid range.

Changelog

VersionDescription
8.0.0scale is now nullable.

Examples

Example #1 bccomp() example

<?php

echo bccomp('1', '2') . "\n"; // -1
echo bccomp('1.00001', '1', 3); // 0
echo bccomp('1.00001', '1', 5); // 1

?>

See Also