MongoDB\BSON\Document::offsetExists

(mongodb >=1.17.0)

MongoDB\BSON\Document::offsetExistsReturns whether a key is present in the document

説明

final public MongoDB\BSON\Document::offsetExists(mixed $key): bool

パラメータ

key

The key to look for in the document.

戻り値

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

参考

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