(PHP 8 >= 8.4.0)
BcMath\Number::__construct — Creates a BcMath\Number object
Creates a BcMath\Number object from an int or string value.
numnum is a int,
the BcMath\Number::scale is always set to 0.
If num is a string, it must be a valid number,
and the BcMath\Number::scale is automatically set by parsing the string.
This method throws a ValueError if num
is string and not a well-formed BCMath numeric string.
示例 #1 BcMath\Number::__construct() example
<?php
$num1 = new BcMath\Number(100);
$num2 = new BcMath\Number('-200');
$num3 = new BcMath\Number('300.00');
var_dump($num1, $num2, $num3);
?>以上示例会输出：
object(BcMath\Number)#1 (2) {
["value"]=>
string(3) "100"
["scale"]=>
int(0)
}
object(BcMath\Number)#2 (2) {
["value"]=>
string(4) "-200"
["scale"]=>
int(0)
}
object(BcMath\Number)#3 (2) {
["value"]=>
string(6) "300.00"
["scale"]=>
int(2)
}