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PHP Manual [MongoCursorInterface

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PHP Manual || MongoCursorInterface

(PECL mongo >=1.6.0)

MongoCursorInterface::setReadPreferenceSet the read preference for this query

Description

abstract public MongoCursorInterface::setReadPreference ( string $read_preference [, array $tags ] ) : MongoCursorInterface

Parameters

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.

Return Values

Returns this cursor.

Errors/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.

See Also



PHP Manual || MongoCursorInterface