MongoDB\Driver\Manager::getReadPreference
(mongodb >=1.0.0)
MongoDB\Driver\Manager::getReadPreference — Return the ReadPreference for the Manager
Descripción
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.
Parámetros
Esta función no tiene parámetros.
Valores devueltos
The MongoDB\Driver\ReadPreference for the Manager.
Errores/Excepciones
- Lanza una MongoDB\Driver\Exception\InvalidArgumentException en errores de análisis de argumentos.
Ejemplos
Ejemplo #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());
?>El resultado del ejemplo sería algo similar a:
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) {
}
}
}
Ver también
- MongoDB\Driver\ReadPreference
- MongoDB\Driver\Manager::__construct() - Create new MongoDB Manager
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