MongoDB
PHP Manual

MongoDB::getReadPreference

(PECL mongo >=1.3.0)

MongoDB::getReadPreferenceGet the read preference for this database

Описание

public array MongoDB::getReadPreference ( void )

Список параметров

У этой функции нет параметров.

Возвращаемые значения

This function returns an array describing the read preference. The array contains the values type for the string read preference mode (corresponding to the MongoClient constants), and tagsets containing a list of all tag set criteria. If no tag sets were specified, tagsets will not be present in the array.

Список изменений

Версия Описание
1.3.3 The return value has changed to be consistent with MongoDB::setReadPreference(). The type value was changed from a number to a string, type_string was removed, and tagsets now expresses tags as key/value pairs instead of colon-delimited strings.

Примеры

Пример #1 MongoDB::getReadPreference() return value example

<?php

$m 
= new MongoClient();
$db $m->test;
$db->setReadPreference(MongoClient::RP_SECONDARY, array(
    array(
'dc' => 'east''use' => 'reporting'),
    array(
'dc' => 'west'),
    array(),
));
var_dump($db->getReadPreference());

Результат выполнения данного примера:

array(2) {
  ["type"]=>
  string(9) "secondary"
  ["tagsets"]=>
  array(3) {
    [0]=>
    array(2) {
      ["dc"]=>
      string(4) "east"
      ["use"]=>
      string(9) "reporting"
    }
    [1]=>
    array(1) {
      ["dc"]=>
      string(7) "west"
    }
    [2]=>
    array(0) {
    }
  }
}

Смотрите также


MongoDB
PHP Manual