MongoCursorInterface::setReadPreference
Set the read preference for this query
Beschreibung
abstract public MongoCursorInterface MongoCursorInterface::setReadPreference
( string $read_preference
[, array $tags
] )
Parameter-Liste
-
read_preference
-
The read preference mode: MongoClient::RP_PRIMARY, MongoClient::RP_PRIMARY_PREFERRED, MongoClient::RP_SECONDARY, MongoClient::RP_SECONDARY_PREFERRED, or MongoClient::RP_NEAREST.
-
tags
-
An array of zero or more tag sets, where each tag set is itself an array of criteria used to match tags on replica set members.
Rückgabewerte
Returns this cursor.
Fehler/Exceptions
Emits E_WARNING if either parameter is invalid, or if one or more tag sets are provided with the MongoClient::RP_PRIMARY read preference mode.