MongoDB::setReadPreference
(PECL mongo >=1.3.0)
MongoDB::setReadPreference — Set the read preference for this database
Description
public bool MongoDB::setReadPreference
( string
$read_preference
[, array $tags
] )Parameters
-
read_preference -
The read preference mode:
MongoClient::RP_PRIMARY,MongoClient::RP_PRIMARY_PREFERRED,MongoClient::RP_SECONDARY,MongoClient::RP_SECONDARY_PREFERRED, orMongoClient::RP_NEAREST. -
tags -
An array of zero or more tag sets, where each tag set is itself an array of criteria used to match tags on replica set members.
Return Values
Returns TRUE on success, or FALSE otherwise.
Errors/Exceptions
Emits E_WARNING if either parameter is invalid, or if one or more tag sets are provided with the MongoClient::RP_PRIMARY read preference mode.
Examples
Example #1 MongoDB::setReadPreference() tag set array syntax example
<?php
$m = new MongoClient();
$db = $m->test;
// Prefer the nearest server in the "east" data center also used for reporting,
// but fall back to a server in the "west" data center
$db->setReadPreference(MongoClient::RP_NEAREST, array(
array('dc' => 'east', 'use' => 'reporting'),
array('dc' => 'west'),
));
?>
See Also
- The read preferences documentation.
- MongoDB::getReadPreference() - Get the read preference for this database
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- MongoDB
- Базовые классы
- Функция MongoDB::authenticate() - Log in to this database
- Функция MongoDB::command() - Execute a database command
- Функция MongoDB::__construct() - Creates a new database
- Функция MongoDB::createCollection() - Creates a collection
- Функция MongoDB::createDBRef() - Creates a database reference
- Функция MongoDB::drop() - Drops this database
- Функция MongoDB::dropCollection() - Drops a collection [deprecated]
- Функция MongoDB::execute() - Runs JavaScript code on the database server.
- Функция MongoDB::forceError() - Creates a database error
- Функция MongoDB::__get() - Gets a collection
- MongoDB::getCollectionInfo
- Функция MongoDB::getCollectionNames() - Get all collections from this database
- Функция MongoDB::getDBRef() - Fetches the document pointed to by a database reference
- Функция MongoDB::getGridFS() - Fetches toolkit for dealing with files stored in this database
- Функция MongoDB::getProfilingLevel() - Gets this database's profiling level
- Функция MongoDB::getReadPreference() - Get the read preference for this database
- Функция MongoDB::getSlaveOkay() - Get slaveOkay setting for this database
- Функция MongoDB::getWriteConcern() - Get the write concern for this database
- Функция MongoDB::lastError() - Check if there was an error on the most recent db operation performed
- Функция MongoDB::listCollections() - Gets an array of all MongoCollections for this database
- Функция MongoDB::prevError() - Checks for the last error thrown during a database operation
- Функция MongoDB::repair() - Repairs and compacts this database
- Функция MongoDB::resetError() - Clears any flagged errors on the database
- Функция MongoDB::selectCollection() - Gets a collection
- Функция MongoDB::setProfilingLevel() - Sets this database's profiling level
- Функция MongoDB::setReadPreference() - Set the read preference for this database
- Функция MongoDB::setSlaveOkay() - Change slaveOkay setting for this database
- Функция MongoDB::setWriteConcern() - Set the write concern for this database
- Функция MongoDB::__toString() - The name of this database
Коментарии
404 Not Found