La clase BcMath\Number

    (PHP 8 >= 8.4.0)

    Introducción

    Una clase para un número de precisión arbitraria. Estos objetos soportan los operadores aritméticos y de comparación.

    Nota: Esta clase no se ve afectada por la directiva INI bcmath.scale definida en el php.ini.

    Nota: El comportamiento de un operador sobrecargado es el mismo que especificar null para el argumento scale en el método correspondiente.

    Sinopsis de la Clase

    namespace BcMath;
    final readonly class Number implements Stringable {
    /* Propiedades */
    public string $value;
    public int $scale;
    /* Métodos */
    public __construct(string|int $num)
    public add(BcMath\Number|string|int $num, ?int $scale = null): BcMath\Number
    public ceil(): BcMath\Number
    public compare(BcMath\Number|string|int $num, ?int $scale = null): int
    public div(BcMath\Number|string|int $num, ?int $scale = null): BcMath\Number
    public divmod(BcMath\Number|string|int $num, ?int $scale = null): array
    public floor(): BcMath\Number
    public mod(BcMath\Number|string|int $num, ?int $scale = null): BcMath\Number
    public mul(BcMath\Number|string|int $num, ?int $scale = null): BcMath\Number
    public pow(BcMath\Number|string|int $exponent, ?int $scale = null): BcMath\Number
    public powmod(BcMath\Number|string|int $exponent, BcMath\Number|string|int $modulus, ?int $scale = null): BcMath\Number
    public round(int $precision = 0, RoundingMode $mode = RoundingMode::HalfAwayFromZero): BcMath\Number
    public __serialize(): array
    public sqrt(?int $scale = null): BcMath\Number
    public sub(BcMath\Number|string|int $num, ?int $scale = null): BcMath\Number
    public __toString(): string
    public __unserialize(array $data): void
    }

    Propiedades

    value
    Una representación en string de un número de precisión arbitraria.
    scale
    El valor de la escala actualmente definida en el objeto. Para los objetos resultantes de cálculos, este valor se calcula y define automáticamente, a menos que el argumento scale haya sido definido en el método de cálculo.

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    User Contributed Notes 2 notes

    up
    5
    harl at gmail dot com
    1 year ago
    BcMath\Number is one of those classes that overloads boolean casting.
If $z = new BcMath\Number(0) then $z is considered falsy (and hence, for example, empty($z)==true) even though it is a genuine Number object.
    up
    0
    miken32 at gmail dot com
    19 days ago
    This class overloads many operators so you can do operations more naturally. But a big caveat is that the strict equality operator *does not work* as demonstrated with this code:

<?php
$sum = new BcMath\Number('23.93') + new BcMath\Number(17) - 6;
echo $sum;            // outputs 34.93

if ($sum < 99 && $sum > 34) {
    echo "foo";       // outputs foo
}

$comp = new BcMath\Number('34.93');
if ($sum === $comp) {
    echo "bar";       // outputs nothing!
}

if ($sum == $comp) {
    // yuck, don't do this
}

if ($sum->compare($comp) === 0) {
    echo "baz";       // outputs baz
}
?>
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