array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'mongodb-driver-readconcern.construct.php', 1 => 'MongoDB\\Driver\\ReadConcern::__construct', ), 'up' => array ( 0 => 'class.mongodb-driver-readconcern.php', 1 => 'MongoDB\\Driver\\ReadConcern', ), 'prev' => array ( 0 => 'mongodb-driver-readconcern.bsonserialize.php', 1 => 'MongoDB\\Driver\\ReadConcern::bsonSerialize', ), 'next' => array ( 0 => 'mongodb-driver-readconcern.getlevel.php', 1 => 'MongoDB\\Driver\\ReadConcern::getLevel', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/mongodb/mongodb/driver/readconcern/construct.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(mongodb >=1.0.0)
MongoDB\Driver\ReadConcern::__construct — Create a new ReadConcern
Constructs a new MongoDB\Driver\ReadConcern, which is an immutable value object.
level
The » read concern level. You may use, but are not limited to, one of the class constants.
示例 #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);
?>