- PHP Manual
- MongoDB\Driver\ReadPreference
- Returns the ReadPreference's "tagSets" option
MongoDB\Driver\ReadPreference::getTagSets
(mongodb >=1.0.0)
MongoDB\Driver\ReadPreference::getTagSets — Returns the ReadPreference's "tagSets" option
Description
final public MongoDB\Driver\ReadPreference::getTagSets(): array
Parameters
This function has no parameters.
Return Values
Returns the ReadPreference's "tagSets" option.
Errors/Exceptions
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
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. */
$rp = new MongoDB\Driver\ReadPreference($mode, null);
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) { } }
See Also
Here you can write a comment
There are no comments available yet.