bcadd
(PHP 4, PHP 5)
bcadd — Add two arbitrary precision numbers
说明
string bcadd ( string $left_operand , string $right_operand [, int $scale ] )Sums left_operand and right_operand.
参数
- left_operand
-
The left operand, as a string.
- right_operand
-
The right operand, as a string.
- scale
-
此可选参数用于设置结果中小数点后的小数位数。 也可通过使用 bcscale() 来设置全局默认的小数位数，用于所有函数。
返回值
The sum of the two operands, as a string.
范例
Example #1 bcadd() example
<?php
$a = '1.234';
$b = '5';
echo bcadd($a, $b); // 6
echo bcadd($a, $b, 4); // 6.2340
?>
参见
- bcsub() - Subtract one arbitrary precision number from another
