php - bcsub

Description

string bcsub ( string $left_operand, string $right_operand [, int $scale] )
Subtracts the right_operand from the left_operand.

Parameters

left_operand

The left operand, as a string.

right_operand

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. You can also set the global default scale for all functions by using bcscale().

Return Values

The result of the substraction, as a string.

Examples

Example 336. bcsub() example

<?php

$a = '1.234';$b = '5';

echo bcsub($a, $b); // -3 
echo bcsub($a, $b, 4); // -3.7660
?>