MongoDB::getReadPreference

(PECL mongo >=1.3.0)

MongoDB::getReadPreference — Get the read preference for this database

Açıklama

public MongoDB::getReadPreference ( void ) : array

Değiştirgeler

Bu işlevin değiştirgesi yoktur.

Dönen Değerler

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.

Sürüm Bilgisi

Sürüm:	Açıklama
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.

Örnekler

Örnek 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());
?>

Yukarıdaki örneğin çıktısı:

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) {
    }
  }
}

Ayrıca Bakınız

The read preferences documentation.
MongoDB::setReadPreference() - Set the read preference for this database

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