MongoDB\BSON\Iterator::key

(mongodb >=1.16.0)

MongoDB\BSON\Iterator::key — Returns the key of the current element

Descrizione

public MongoDB\BSON\Iterator::key(): string|int

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Returns the key of the current element. When iterating a BSON document, the key will always be a string. When iterating a BSON array, the key will be an int.

Errori/Eccezioni

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
Throws MongoDB\Driver\Exception\LogicException if the iterator is not valid.

Vedere anche:

Iterator::key() - Return the key of the current element

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