The MongoDB\BSON\Decimal128 class

(mongodb >=1.2.0)

简介

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....

Note: MongoDB\BSON\Decimal128 is only compatible with MongoDB 3.4+. Attempting to use the BSON type with an earlier version of MongoDB will result in an error.

类摘要

final MongoDB\BSON\Decimal128 implements MongoDB\BSON\Decimal128Interface , MongoDB\BSON\Type , Serializable , JsonSerializable {

/* 方法 */

final public __construct ( string $value = ? )

final public jsonSerialize ( ) : mixed

final public serialize ( ) : string

final public __toString ( ) : string

final public unserialize ( string $serialized ) : void

}

更新日志

版本	说明
PECL mongodb 1.3.0	Implements MongoDB\BSON\Decimal128Interface.
PECL mongodb 1.2.0	Implements Serializable and JsonSerializable.

MongoDB\BSON\Decimal128::__construct — Construct a new Decimal128
MongoDB\BSON\Decimal128::jsonSerialize — Returns a representation that can be converted to JSON
MongoDB\BSON\Decimal128::serialize — Serialize a Decimal128
MongoDB\BSON\Decimal128::__toString — Returns the string representation of this Decimal128
MongoDB\BSON\Decimal128::unserialize — Unserialize a Decimal128

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The MongoDB\BSON\Decimal128 class

简介

类摘要

更新日志

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User Contributed Notes