MongoDB\Driver\Manager::getReadPreference
(mongodb >=1.0.0)
MongoDB\Driver\Manager::getReadPreference — Return the ReadPreference for the Manager
説明
Returns the MongoDB\Driver\ReadPreference for the Manager, which is derived from its URI options. This is the default read preference for queries and commands executed on the Manager.
パラメータ
この関数にはパラメータはありません。
戻り値
The MongoDB\Driver\ReadPreference for the Manager.
エラー / 例外
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
例
例1 MongoDB\Driver\Manager::getReadPreference() example
<?php
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017');
var_dump($manager->getReadPreference());
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017/?readPreference=secondaryPreferred&readPreferenceTags=dc:ny,rack:1&readPreferenceTags=dc:ny&readPreferenceTags=');
var_dump($manager->getReadPreference());
?>上の例の出力は、 たとえば以下のようになります。
object(MongoDB\Driver\ReadPreference)#2 (1) {
["mode"]=>
string(7) "primary"
}
object(MongoDB\Driver\ReadPreference)#1 (2) {
["mode"]=>
string(18) "secondaryPreferred"
["tags"]=>
array(3) {
[0]=>
object(stdClass)#3 (2) {
["dc"]=>
string(2) "ny"
["rack"]=>
string(1) "1"
}
[1]=>
object(stdClass)#4 (1) {
["dc"]=>
string(2) "ny"
}
[2]=>
object(stdClass)#5 (0) {
}
}
}
参考
- MongoDB\Driver\ReadPreference
- MongoDB\Driver\Manager::__construct() - Create new MongoDB Manager
add a note
User Contributed Notes
There are no user contributed notes for this page.
