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PHP Manual :: MongoDB\Driver\ReadPreference::getTagSets



MongoDB\Driver\ReadPreference::getMode || MongoDB\Driver\ReadConcern || MongoDB\Driver\ReadPreference || PHP Manual

(mongodb >=1.0.0)

MongoDB\Driver\ReadPreference::getTagSetsReturns the ReadPreference's "tagSets" option

Description

final public array MongoDB\Driver\ReadPreference::getTagSets ( void )

Parameters

This function has no parameters.

Return Values

Returns the ReadPreference's "tagSets" option.

Errors/Exceptions

Examples

Example #1 MongoDB\Driver\ReadPreference::getTagSets() example

<?php

$mode 
MongoDB\Driver\ReadPreference::RP_SECONDARY_PREFERRED);

/* Null and an empty array both denote no tag set preference. */
$rp = new MongoDB\Driver\ReadPreference($modenull);
var_dump($rp->getTagSets());

$rp = new MongoDB\Driver\ReadPreference($mode, []);
var_dump($rp->getTagSets());

/* Prefer a node in New York, but fall back to any available node. */
$rp = new MongoDB\Driver\ReadPreference($mode, [['dc' => 'ny']]);
var_dump($rp->getTagSets());

/* Prefer a node in the New York, followed by a node in San Francisco that is
   labeled for reporting usage, and finally fall back to any available node. */
$rp = new MongoDB\Driver\ReadPreference($mode, [
  [
'dc' => 'ny'],
  [
'dc' => 'sf''use' => 'reporting'],
  [],
]);
var_dump($rp->getTagSets());

?>

The above example will output:

array(0) {
}
array(0) {
}
array(2) {
  [0]=>
  array(1) {
    ["dc"]=>
    string(2) "ny"
  }
  [1]=>
  array(0) {
  }
}
array(3) {
  [0]=>
  array(1) {
    ["dc"]=>
    string(2) "ny"
  }
  [1]=>
  array(2) {
    ["dc"]=>
    string(2) "sf"
    ["use"]=>
    string(9) "reporting"
  }
  [2]=>
  array(0) {
  }
}


MongoDB\Driver\ReadPreference::getMode || MongoDB\Driver\ReadConcern || MongoDB\Driver\ReadPreference || PHP Manual
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