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MongoDB\BSON\Document::getIterator	MongoDB\BSON\Document::offsetExists

MongoDB\BSON\Document	Last updated: Mon, 26 Oct 2026

MongoDB\BSON\Document::has

(mongodb >=1.16.0)

MongoDB\BSON\Document::has — Returns whether a key is present in the document

Description

final public function MongoDB\BSON\Document::has(string $key): bool

Parameters

key (string): The key to look for in the document.

Return Values

Returns true if the key is present in the document and false otherwise.

Errors/Exceptions

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

See Also

MongoDB\BSON\Document::get() - Returns the value of a key in the document
» BSON Types

MongoDB\BSON\Document::getIterator	MongoDB\BSON\Document::offsetExists

MongoDB\BSON\Document	Last updated: Mon, 26 Oct 2026