bcsub
Description
string bcsub ( string left_operand, string right_operand [, int scale])Subtracts the right_operand from the left_operand and returns the result in a string. The optional scale parameter is used to set the number of digits after the decimal place in the result.
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().
