bcsub
(PHP 3, PHP 4, PHP 5)
bcsub -- Subtract one arbitrary precision number from another
Description
string
bcsub ( string left_operand, string right_operand [, int scale] )
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.
scaleThis optional parameter is used to set the number
of digits after the decimal place in the result. You can also set the global default scale
for all functions by using bcscale().
Return Values
The result of the substraction, 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
?>
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