PHP 5.4.31 Released

bcsub

(PHP 4, PHP 5)

bcsubSubtract one arbitrary precision number from another

Descrierea

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

Subtracts the right_operand from the left_operand.

Parametri

left_operand

The left operand, as a string.

right_operand

The right operand, as a string.

scale

Acest parametru opțional este utilizat pentru a stabili numărul cifrelor după virgulă din rezultat. De asemenea puteți să stabiliți parametrul global scale pentru toate funcțiile utilizând bcscale().

Valorile întoarse

The result of the subtraction, as a string.

Exemple

Example #1 bcsub() example

<?php

$a 
'1.234';
$b '5';

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

?>

Vedeți de asemenea

  • bcadd() - Add two arbitrary precision numbers

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User Contributed Notes 1 note

up
-10
info at DONOTSPAM dot ict-eagle dot eu
4 years ago
Note that it is almost useless to put a integer higher than 6 maybe 7 in the scale parameter.

In some cases this might be needed. But for the simple souls, more than 4 is not required in most of the time.
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