(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.
Diese Funktion besitzt keine Parameter.
The MongoDB\Driver\ReadPreference for the Manager.
Beispiel #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());
?>Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
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) { } } }