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<MongoDB\BSON\Undefined::jsonSerializeMongoDB\Driver\Monitoring>
^MongoDB\BSON\UndefinedLast updated: Mon, 26 Oct 2026

MongoDB\BSON\Undefined::__toString

(mongodb >=1.4.0)

MongoDB\BSON\Undefined::__toString — Returns an empty string

Description

final public function MongoDB\BSON\Undefined::__toString(): string

Parameters

This function has no parameters.

Return Values

Returns an empty string.

See Also


<MongoDB\BSON\Undefined::jsonSerializeMongoDB\Driver\Monitoring>
^MongoDB\BSON\UndefinedLast updated: Mon, 26 Oct 2026