BC math
PHP Manual

bcsub

(PHP 4, PHP 5)

bcsub — Subtract one arbitrary precision number from another

Описание

string bcsub ( string $left_operand , string $right_operand [, int $scale ] )

Subtracts the right_operand from the left_operand .

Список параметров

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().

Возвращаемые значения

The result of the substraction, as a string.

Примеры

Example#1 bcsub() example

<?php

$a 
'1.234';
$b '5';

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

?>

Смотрите также


BC math
PHP Manual