BC Math Функции
Be aware:
$exp1 = "1E5";
$exp2 = "2E4";
$ans1 = bcadd((float)$exp1, (float)$exp2, 3);
$ans2 = bcadd((int)$exp1, (int)$exp2, 3);
$ans3 = bcadd($exp1, $exp2, 3);
echo "1: $exp1 + $exp2 = $ans1\r\n";
echo "2: $exp1 + $exp2 = $ans2\r\n";
echo "3: $exp1 + $exp2 = $ans3\r\n";
1: 1E5 + 2E4 = 120000.000
2: 1E5 + 2E4 = 3.000
3: 1E5 + 2E4 = 0.000
bcadd
(PHP 4, PHP 5)
bcadd — Add two arbitrary precision numbers
Описание
string bcadd
( string $left_operand
, string $right_operand
[, int $scale
] )
Sums left_operand and right_operand .
Список параметров
- 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().
Возвращаемые значения
The sum of the two operands, as a string.
Примеры
Пример #1 bcadd() example
<?php
$a = '1.234';
$b = '5';
echo bcadd($a, $b); // 6
echo bcadd($a, $b, 4); // 6.2340
?>
add a note
User Contributed Notesbcadd
Bo Anders Svensson
23-May-2005 05:25
23-May-2005 05:25