(mongodb >=1.0.0)
MongoDB\Driver\Manager::selectServer — Select a server matching a read preference
$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.
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.
Returns a MongoDB\Driver\Server matching the read preference.
| 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.
|