MongoDB\Driver\Monitoring\TopologyChangedEvent::getPreviousDescription

(mongodb >=1.13.0)

MongoDB\Driver\Monitoring\TopologyChangedEvent::getPreviousDescription — Returns the previous description for the topology

说明

final public MongoDB\Driver\Monitoring\TopologyChangedEvent::getPreviousDescription(): MongoDB\Driver\TopologyDescription

参数

此函数没有参数。

返回值

Returns the previous MongoDB\Driver\TopologyDescription for the topology.

错误／异常