MongoDB\Driver\ReadConcern::__construct
(mongodb >=1.0.0)
MongoDB\Driver\ReadConcern::__construct — Create a new ReadConcern
Descrierea
final public MongoDB\Driver\ReadConcern::__construct
( string
$level = ?
)Constructs a new MongoDB\Driver\ReadConcern, which is an immutable value object.
Parametri
-
level -
The » read concern level. You may use, but are not limited to, one of the class constants.
Erori/Excepții
- Emite MongoDB\Driver\Exception\InvalidArgumentException în cazul erorilor la interpretarea argumentelor.
Exemple
Example #1 MongoDB\Driver\ReadConcern::__construct() example
<?php
/* Unspecified read isolation level (uses the server's default behavior) */
$rc = new MongoDB\Driver\ReadConcern();
/* Request read isolation from a single replica set node */
$rc = new MongoDB\Driver\ReadConcern(MongoDB\Driver\ReadConcern::LOCAL);
/* Request read isolation from a majority of the replica set nodes */
$rc = new MongoDB\Driver\ReadConcern(MongoDB\Driver\ReadConcern::MAJORITY);
?>
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