bcsub
Subtract one arbitrary precision number from another
Description
string bcsub(string $num1, string $num2, intnull $scale = null)
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 0 if
this has not been set.
Return Values
The result of the subtraction, as a string.
Examples
Example #1 bcsub example
<?php
$a = '1.234';
$b = '5';
echo bcsub($a, $b); // -3
echo bcsub($a, $b, 4); // -3.7660
?>