The MongoDB\BSON\Undefined class

    (mongodb >=1.4.0)

    简介

    BSON type for the "Undefined" type. This BSON type is deprecated, and this class can not be instantiated. It will be created from a BSON undefined type while converting BSON to PHP, and can also be converted back into BSON while storing documents in the database.

    类摘要

    final class MongoDB\BSON\Undefined implements MongoDB\BSON\Type, Serializable, JsonSerializable, Stringable {
    /* 方法 */
    final private __construct()
    final public jsonSerialize(): mixed
    final public serialize(): string
    final public __toString(): string
    final public unserialize(string $data): void
    }

    更新日志

    版本 说明
    PECL mongodb 1.12.0 Implements Stringable for PHP 8.0+.

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