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MongoCursor::getReadPreference

(PECL mongo >=1.3.3)

MongoCursor::getReadPreferenceGet the read preference for this query

Descrição

public MongoCursor::getReadPreference ( void ) : array

Parâmetros

Esta função não possui parâmetros.

Valor Retornado

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.

Exemplos

Exemplo #1 MongoCursor::getReadPreference() return value example

<?php

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

O exemplo acima irá imprimir:

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) {
    }
  }
}

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