bcsqrt
GMP
BC Math Функции
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 subtraction, as a string.

### Примеры

Пример #1 bcsub() example

`<?php
$a = '1.234';
$b = '5';
echo bcsub($a, $b); // -3
echo bcsub($a, $b, 4); // -3.7660
?>`

### Смотрите также

- bcadd() - Add two arbitrary precision numbers

bcsqrt
GMP
BC Math Функции
PHP Manual