BC Math Functions

bcsub

Subtract one arbitrary precision number from another

Description

string bcsub ( string $left_operand , string $right_operand [, int $scale = 0 ] )

Subtracts the right_operand from the left_operand.

Parameters

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. 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

?>

See Also

bcadd