(mongodb >=1.0.0)
MongoDB\Driver\Manager::getWriteConcern — Return the WriteConcern for the Manager
Returns the MongoDB\Driver\WriteConcern for the Manager, which is derived from its URI options. This is the default write concern for writes and commands executed on the Manager.
此函数没有参数。
The MongoDB\Driver\WriteConcern for the Manager.
示例 #1 MongoDB\Driver\Manager::getWriteConcern() example
<?php
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017');
var_dump($manager->getWriteConcern());
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017/?w=majority&wtimeoutMS=2000');
var_dump($manager->getWriteConcern());
?>以上示例的输出类似于：
object(MongoDB\Driver\WriteConcern)#2 (0) {
}
object(MongoDB\Driver\WriteConcern)#1 (2) {
["w"]=>
string(8) "majority"
["wtimeout"]=>
int(2000)
}