Conexão com adodb + mysql

Boa noite, atualizei meu php, mysql e adodb e agora estou tendo o seguinte erro :

(Object)#0
message = "faultCode:AMFPHP_RUNTIME_ERROR faultString:'mysql_pconnect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead' faultDetail:'C:\xampp\php\adodb5\drivers\adodb-mysql.inc.php on line 476'"
name = "Error"
rootCause = (null)

estou realizando a conexão :

 public function connection(){
 $comf = new Config_ini();

 $dbtype = $comf->dbtype;
 $dbname = $comf->dbname;
 $dbhost = $comf->dbhost;
 $dbuser = $comf->dbuser;
 $dbpass = $comf->dbpass;
 //----------------------------------------------
	$db = NewADOConnection($dbtype);
	$db->SetFetchMode(ADODB_FETCH_ASSOC);
	$db->debug = false;
	$db->PConnect($dbhost,$dbuser,$dbpass,$dbname);
 $db->Execute("SET GLOBAL sql_mode='MYSQL40'");
 $db->Execute("set names 'utf8'");
 //----------------------------------------------
 return $db;

 }

no Config_ini.php é assim :

<?php
 include_once '../../../../../php/adodb5/adodb.inc.php';

class Config_ini {

 public $dbtype="mysql";
 public $dir_imagem_bd = "";
 public $dbname="teste";

 public $dbhost="localhost";
 public $dbuser="root";
 public $dbpass="123";

 public $_explicitType = "Crud.Config_ini";

}
?>

mesmo mudando o dbtype para mysqli não funciona....como faço ?