MongoClient::getReadPreference

(PECL mongo >=1.3.0)

MongoClient::getReadPreference — Get the read preference for this connection

This extension that defines this method is deprecated. Instead, the MongoDB extension should be used. There is no equivalent for this method in the new extension.

Опис

public array MongoClient::getReadPreference ( void )

Параметри

В цієї функції немає параметрів.

Значення, що повертаються

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.

Журнал Змін

Версія	Опис
1.3.3	The return value has changed to be consistent with MongoClient::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.

Приклади

Приклад #1 MongoClient::getReadPreference() return value example


<?php

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

Наведений вище приклад виведе:

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) {
    }
  }
}

Прогляньте Також

The read preferences documentation.
MongoClient::setReadPreference() - Set the read preference for this connection

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