(mongodb >=1.0.0)
MongoDB\Driver\Manager::getReadPreference — Return the ReadPreference for the Manager
Returns the MongoDB\Driver\ReadPreference for the Manager, which is derived from its URI options. This is the default read preference for queries and commands executed on the Manager.
У этой функции нет параметров.
The MongoDB\Driver\ReadPreference for the Manager.
Пример #1 MongoDB\Driver\Manager::getReadPreference() example
<?php
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017');
var_dump($manager->getReadPreference());
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017/?readPreference=secondaryPreferred&readPreferenceTags=dc:ny,rack:1&readPreferenceTags=dc:ny&readPreferenceTags=');
var_dump($manager->getReadPreference());
?>
Результатом выполнения данного примера будет что-то подобное:
object(MongoDB\Driver\ReadPreference)#2 (1) { ["mode"]=> string(7) "primary" } object(MongoDB\Driver\ReadPreference)#1 (2) { ["mode"]=> string(18) "secondaryPreferred" ["tags"]=> array(3) { [0]=> object(stdClass)#3 (2) { ["dc"]=> string(2) "ny" ["rack"]=> string(1) "1" } [1]=> object(stdClass)#4 (1) { ["dc"]=> string(2) "ny" } [2]=> object(stdClass)#5 (0) { } } }