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bcscale

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

bcscale — Set or get default scale parameter for all bc math functions

Опис

bcscale(int $scale): int

Sets the default scale parameter for all subsequent calls to bc math functions that do not explicitly specify a scale parameter.

bcscale(null $scale = null): int

Gets the current scale factor.

Параметри

scale

The scale factor.

Значення, що повертаються

Returns the old scale when used as setter. Otherwise the current scale is returned.

Помилки/виключення

This function throws a ValueError if scale is outside the valid range.

Журнал змін

Версія Опис
8.0.0 scale is now nullable.
7.3.0 bcscale() can now be used to get the current scale factor; when used as setter, it now returns the old scale value. Formerly, scale was mandatory, and bcscale() always returned true.

Приклади

Приклад #1 bcscale() example

<?php

// default scale : 3
bcscale(3);
echo bcdiv('105', '6.55957'); // 16.007

// this is the same without bcscale()
echo bcdiv('105', '6.55957', 3); // 16.007

?>