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이 문서에서는 PHP 중국어 웹사이트 매뉴얼 풀어 주다
(mongodb >=1.0.0)
$readPreference
[, array $tagSets
] )MongoDB\Driver\ReadPreference::RP_PRIMARY
MongoDB\Driver\ReadPreference::RP_PRIMARY_PREFERRED
MongoDB\Driver\ReadPreference::RP_SECONDARY
MongoDB\Driver\ReadPreference::RP_SECONDARY_PREFERRED
MongoDB\Driver\ReadPreference::RP_NEAREST