php8.5
/
Download
Home/ Manual/ mongodb / bson/ The MongoDB\BSON\Undefined class

The MongoDB\BSON\Undefined class

Guide Edit on GitHub ✎

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.

Intro

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.

Class synopsis

class MongoDB\BSON\Undefined { }

Changelog

VersionDescription
PECL mongodb 1.12.0Implements Stringable for PHP 8.0+.

Undefined

In this section

MongoDB\BSON\Undefined::__construct

Construct a new Undefined (unused)

MongoDB\BSON\Undefined::__toString

Returns an empty string

MongoDB\BSON\Undefined::jsonSerialize

Returns a representation that can be converted to JSON

Source: reference/mongodb/bson/undefined.xml · from the official PHP manual (php/doc-en)