MongoCollection::getReadPreference

(PECL mongo >=1.3.0)

MongoCollection::getReadPreferenceGet the read preference for this collection

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public MongoCollection::getReadPreference ( void ) : array

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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.

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1.3.3 The return value has changed to be consistent with MongoCollection::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.

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Example #1 MongoCollection::getReadPreference() return value example

<?php

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

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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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