# The Mongo class [deprecated]

(PECL mongo >=0.9.0)

## Introduction

A connection between PHP and MongoDB.

This class extends MongoClient and provides access to several deprecated methods.

For backwards compatibility, it also defaults the "w" option of its constructor argument to 0, which does not require write operations to be acknowledged by the server. See MongoClient::__construct() for more information.

Warning

This class has been DEPRECATED as of version 1.3.0. Relying on this feature is highly discouraged. Please use MongoClient instead.

## Class synopsis

Mongo extends MongoClient {
/* Methods */
protected connectUtil ( void ) : bool
public static getPoolSize ( void ) : int
public getSlave ( void ) : string
public getSlaveOkay ( void ) : bool
public poolDebug ( void ) : array
public static setPoolSize ( int `$size` ) : bool
public setSlaveOkay ([ bool `$ok` = `TRUE` ] ) : bool
public switchSlave ( void ) : string
/* Inherited methods */
public MongoClient::close ([ boolean|string `$connection` ] ) : bool
public MongoClient::connect ( void ) : bool
public MongoClient::dropDB ( mixed `$db` ) : array
public MongoClient::__get ( string `$dbname` ) : MongoDB
public static MongoClient::getConnections ( void ) : array
public MongoClient::getHosts ( void ) : array
public MongoClient::getReadPreference ( void ) : array
public MongoClient::getWriteConcern ( void ) : array
public MongoClient::killCursor ( string `$server_hash` , int|MongoInt64 `$id` ) : bool
public MongoClient::listDBs ( void ) : array
public MongoClient::selectCollection ( string `$db` , string `$collection` ) : MongoCollection
public MongoClient::selectDB ( string `$name` ) : MongoDB
public MongoClient::setReadPreference ( string `$read_preference` [, array `$tags` ] ) : bool
public MongoClient::setWriteConcern ( mixed `$w` [, int `$wtimeout` ] ) : bool
public MongoClient::__toString ( void ) : string
}

## Table of Contents

- Mongo::connectUtil — Connects with a database server
- Mongo::__construct — The __construct purpose
- Mongo::getPoolSize — Get pool size for connection pools
- Mongo::getSlave — Returns the address being used by this for slaveOkay reads
- Mongo::getSlaveOkay — Get slaveOkay setting for this connection
- Mongo::poolDebug — Returns information about all connection pools
- Mongo::setPoolSize — Set the size for future connection pools
- Mongo::setSlaveOkay — Change slaveOkay setting for this connection
- Mongo::switchSlave — Choose a new secondary for slaveOkay reads