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The MongoDB\BSON\Decimal128 class

(mongodb >=1.2.0)

Вступ

BSON type for the » Decimal128 floating-point format, which supports numbers with up to 34 decimal digits (i.e. significant digits) and an exponent range of −6143 to +6144.

Unlike the double BSON type (i.e. float in PHP), which only stores an approximation of the decimal values, the decimal data type stores the exact value. For example, MongoDB\BSON\Decimal128('9.99') has a precise value of 9.99 where as a double 9.99 would have an approximate value of 9.9900000000000002131628….

Зауваження: Клас MongoDB\BSON\Decimal128 доступний в MongoDB 3.4+. Спроба використати цей BSON-тип в старіших версіях MongoDB викличе помилку.

Короткий огляд класу

final class MongoDB\BSON\Decimal128 implements MongoDB\BSON\Decimal128Interface, MongoDB\BSON\Type, JsonSerializable, Stringable {
/* Методи */
final public __construct(string $value)
final public jsonSerialize(): mixed
final public __toString(): string
}

Журнал змін

Версія Опис
PECL mongodb 2.0.0

This class no longer implements the Serializable interface.

PECL mongodb 1.12.0 Implements Stringable for PHP 8.0+.
PECL mongodb 1.3.0 Implements MongoDB\BSON\Decimal128Interface.
PECL mongodb 1.2.0 Implements Serializable and JsonSerializable.

Зміст