MongoDB\Driver\Manager::startSession

(mongodb >=1.4.0)

MongoDB\Driver\Manager::startSession — Start a new client session for use with this client

说明

final public MongoDB\Driver\Manager::startSession ([ array $options ] ) : MongoDB\Driver\Session

Creates a MongoDB\Driver\Session for the given options. The session may then be specified when executing commands, queries, and write operations.

Note: A MongoDB\Driver\Session can only be used with the MongoDB\Driver\Manager from which it was created.

参数

options

options
Option Type Description Default
causalConsistency boolean

Configure causal consistency in a session. If TRUE, each operation in the session will be causally ordered after the previous read or write operation. Set to FALSE to disable causal consistency.

See » Casual Consistency in the MongoDB manual for more information.

TRUE
defaultTransactionOptions array

Default options to apply to newly created transactions. These options are used unless they are overridden when a transaction is started with different value for each option.

options
Option Type Description
readConcern MongoDB\Driver\ReadConcern

A read concern to apply to the operation.

This option is available in MongoDB 3.2+ and will result in an exception at execution time if specified for an older server version.

readPreference MongoDB\Driver\ReadPreference

A read preference to use for selecting a server for the operation.

writeConcern MongoDB\Driver\WriteConcern

A write concern to apply to the operation.

This option is available in MongoDB 4.0+.

[]

返回值

Returns a MongoDB\Driver\Session.

错误／异常

更新日志

版本 说明
1.5.0

The "defaultTransactionOptions" option was added.

参见