# MongoDB\Driver\Session::getOperationTime

(mongodb >=1.4.0)

MongoDB\Driver\Session::getOperationTime — Returns the operation time for this session

### Descripción

final public MongoDB\Driver\Session::getOperationTime(): ?MongoDB\BSON\Timestamp

Returns the operation time for this session. If the session has not been used for any operation and MongoDB\Driver\Session::advanceOperationTime() has not been called, the operation time will be `null`

### Parámetros

Esta función no tiene parámetros.

### Valores devueltos

Returns the operation time for this session, or `null` if the session has no operation time.

### Errores/Excepciones

- Lanza una MongoDB\Driver\Exception\InvalidArgumentException en errores de análisis de argumentos.

### Ver también

- MongoDB\Driver\Session::advanceOperationTime() - Advances the operation time for this session