bcsub

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

bcsubSubtract one arbitrary precision number from another

Description

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

Subtracts the num2 from the num1.

Parameters

num1

The left operand, as a string.

num2

The right operand, as a string.

scale

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.

Changelog

Version Description
8.0.0 scale is now nullable.

Examples

Example #1 bcsub() example

<?php

$a 
'1.234';
$b '5';

echo 
bcsub($a$b);     // -3
echo bcsub($a$b4);  // -3.7660

?>

See Also

  • bcadd() - Add two arbitrary precision numbers