bcsub
(PHP 4, PHP 5, PHP 7, PHP 8)
bcsub — Subtract one arbitrary precision number from another
Description
bcsub(string
$num1, string $num2, ?int $scale = null): string
Subtracts the num2 from the
num1.
Parameters
-
num1 -
The left operand, as a string.
-
num2 -
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. If omitted, it will default to the scale set globally with the bcscale() function, or fallback to
0if this has not been set.
Return Values
The result of the subtraction, as a string.
Changelog
| Version | Description |
|---|---|
| 8.0.0 |
scale is now nullable.
|
Examples
Example #1 bcsub() example
<?php
$a = '1.234';
$b = '5';
echo bcsub($a, $b); // -3
echo bcsub($a, $b, 4); // -3.7660
?>
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