PHP5中文手册·Add two arbitrary precision numbers -- 追寻梦想＞编程乐园＞PHP 编程

string bcadd ( string $left_operand , string $right_operand [, int $scale ] )

Sums left_operand and right_operand .

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().

The sum of the two operands, as a string.

Example#1 bcadd() example


<?php

$a = '1.234';
$b = '5';

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

?>


	PHP5中文手册 BC math bccomp BC math PHP Manual 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` 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 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() BC math bccomp BC math PHP Manual