MongoDB\Driver\Manager::selectServer

    (mongodb >=1.0.0)

    MongoDB\Driver\Manager::selectServer — Select a server matching a read preference

    说明

    final public MongoDB\Driver\Manager::selectServer(?MongoDB\Driver\ReadPreference $readPreference = null): MongoDB\Driver\Server

    Selects a MongoDB\Driver\Server matching readPreference. If readPreference is null or omitted, the primary server will be selected by default. This may be used to preselect a server in order to perform version checking before executing an operation.

    注意: Unlike MongoDB\Driver\Manager::getServers(), this method will initialize database connections and perform server discovery if necessary. See the » Server Selection Specification for additional information.

    参数

    readPreference (MongoDB\Driver\ReadPreference)

    The read preference to use for selecting a server. If null or omitted, the primary server will be selected by default.

    返回值

    Returns a MongoDB\Driver\Server matching the read preference.

    错误／异常

    更新日志

    版本 说明
    PECL mongodb 1.11.0 The readPreference is now optional. If null or omitted, the primary server will be selected by default.

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