GoLang MongoDB\Driver\Manager::getReadPreference

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PHP MongoDB\Driver\Manager::getReadPreference

PHP original manual for MongoDB\Driver\Manager::getReadPreference [ show | php.net ]

MongoDB\Driver\Manager::getReadPreference

(mongodb >=1.0.0)

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

Description

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

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.

Parameters

This function has no parameters.

Return Values

The MongoDB\Driver\ReadPreference for the Manager.

Errors/Exceptions

Examples

Example #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());

?>

The above example will output something similar to:

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) {
    }
  }
}