MongoCursor::getReadPreference

(PECL mongo >=1.3.3)

MongoCursor::getReadPreference — Get the read preference for this query

설명

public array MongoCursor::getReadPreference ( void )

인수

이 함수는 인수가 없습니다.

반환값

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.

예제

Example #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());
?>

위 예제의 출력:

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) {
    }
  }
}

참고

The read preferences documentation.
MongoCursor::setReadPreference() - Set the read preference for this query
MongoCursorInterface::getReadPreference() - Get the read preference for this query