MongoDB\Driver\Manager::getReadPreference

(mongodb >=1.0.0)

MongoDB\Driver\Manager::getReadPreferenceReturn the ReadPreference for the Manager

Descripción

final public MongoDB\Driver\Manager::getReadPreference ( void ) : MongoDB\Driver\ReadPreference

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.

Parámetros

Esta función no tiene parámetros.

Valores devueltos

The MongoDB\Driver\ReadPreference for the Manager.

Errores/Excepciones

Ejemplos

Ejemplo #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());

?>

El resultado del ejemplo sería algo similar a:

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) {
    }
  }
}

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