The MongoClient class

Introduction

A connection manager for PHP and MongoDB.

This class is used to create and manage connections. A typical use is:

Example #1 MongoClient basic usage


<?php

$m = new MongoClient(); // connect
$db = $m->foo; // get the database named "foo"

?>

See MongoClient::__construct() and the section on connecting for more information about creating connections.

Class synopsis

MongoClient {

/* Constants */

const string VERSION ;

const string DEFAULT_HOST = "localhost" ;

const int DEFAULT_PORT = 27017 ;

const string RP_PRIMARY = "primary" ;

const string RP_PRIMARY_PREFERRED = "primaryPreferred" ;

const string RP_SECONDARY = "secondary" ;

const string RP_SECONDARY_PREFERRED = "secondaryPreferred" ;

const string RP_NEAREST = "nearest" ;

/* Properties */

public boolean $connected = FALSE ;

public string $status = NULL ;

protected string $server = NULL ;

protected boolean $persistent = NULL ;

/* Methods */

public __construct ([ string $server = "mongodb://localhost:27017" [, array $options = array("connect" => TRUE) [, array $driver_options ]]] )

public bool close ([ boolean|string $connection ] )

public bool connect ( void )

public array dropDB ( mixed $db )

public MongoDB __get ( string $dbname )

public static array getConnections ( void )

public array getHosts ( void )

public array getReadPreference ( void )

public array getWriteConcern ( void )

public bool killCursor ( string $server_hash , int|MongoInt64 $id )

public array listDBs ( void )

public MongoCollection selectCollection ( string $db , string $collection )

public MongoDB selectDB ( string $name )

public bool setReadPreference ( string $read_preference [, array $tags ] )

public bool setWriteConcern ( mixed $w [, int $wtimeout ] )

public string __toString ( void )

}

Predefined Constants

MongoClient Constants

MongoClient::VERSION: PHP driver version. May be suffixed with "dev", "+" or "-" if it is in-between versions.
MongoClient::DEFAULT_HOST
"localhost": Host to connect to if no host is given.
MongoClient::DEFAULT_PORT
27017: Port to connect to if no port is given.
MongoClient::RP_PRIMARY
"primary": Read preference for the primary replica set member.
MongoClient::RP_PRIMARY_PREFERRED
"primaryPreferred": Read preference for preferring the primary replica set member.
MongoClient::RP_SECONDARY
"secondary": Read preference for a secondary replica set member.
MongoClient::RP_SECONDARY_PREFERRED
"secondaryPreferred": Read preference for preferring a secondary replica set member.
MongoClient::RP_NEAREST
"nearest": Read preference for the nearest replica set member.

Fields

connected

This property will be set to TRUE if we have a open connection to the database, FALSE otherwise. If the connection is to a replica set, this property will only be TRUE if the driver has a connection to a node matching the current read preference. This property does not take authentication into account.

This property is deprecated since version 1.5.0.

status

This property is no longer used and will be set to NULL In driver versions 1.1.x and earlier, this may be set to a string value (e.g. "recycled", "new") when persistent connections are used.