MongoDB::authenticate Log in to this database &mongo.noalternative.method.note; Instead, you need to provide credentials through the connection string. &reftitle.description; public arrayMongoDB::authenticate stringusername stringpassword This method causes its connection to be authenticated. If authentication is enabled for the database server (it's not, by default), you need to log in before the database will allow you to do anything. In general, you should use the authenticate built into MongoClient::__construct in preference to this method. If you authenticate on connection and the connection drops and reconnects during your session, you'll be reauthenticated. If you manually authenticated using this method and the connection drops, you'll have to call this method again once you're reconnected. This method is identical to running: command(array("getnonce" => 1)); $saltedHash = md5($nonce["nonce"]."${username}${hash}"); $result = $db->command(array("authenticate" => 1, "user" => $username, "nonce" => $nonce["nonce"], "key" => $saltedHash )); ?> ]]> Once a connection has been authenticated, it can only be un-authenticated by using the "logout" database command: command(array("logout" => 1)); ?> ]]> &reftitle.parameters; username The username. password The password (in plaintext). &reftitle.returnvalues; Returns database response. If the login was successful, it will return 1); ?> ]]> If something went wrong, it will return 0, "errmsg" => "auth fails"); ?> ]]> ("auth fails" could be another message, depending on database version and what when wrong). &reftitle.seealso; MongoDB core docs on authenticate. &reftitle.changelog; &Version; &Description; 1.2.11 Emits E_DEPRECATED when used. Please pass in the authentication details to the constructor.