MongoDB::__construct

This method is not meant to be called directly. The preferred way to create an instance of MongoDB is through MongoClient::__get() or MongoClient::selectDB().

If you're ignoring the previous paragraph and want to call it directly you can do so:

<?php

$m = new MongoClient();
$db = new MongoDB($m, 'mydbname');

?>

But don't. Isn't this much nicer:

<?php

$m = new MongoClient();
$db = $m->mydbname;

// or, if the name contains weird characters:

$db = $m->selectDB('my,db:name');

?>

Database connection.

Database name.

Returns the database.

Throws default exception if the database name is invalid.