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bcadd

(PHP 3, 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

This 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().

返回值

The sum of the two operands, as a string.

范例

例 1. bcadd() example

<?php

$a = '1.234';
$b = '5';

echo bcadd($a, $b);     // 6
echo bcadd($a, $b, 4);  // 6.2340

?>

参见

bcsub()



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BC math 高精度数学函数上一级bccomp