我创建了一个connection以插入数据并返回自动增量列的最后插入的 id :
function add($tab) {
        $champs= "";
        $value = "";
        $separateur ="";
        $tab["commande_date"] = convertDateFormat5($tab["commande_date"]);
        foreach ($tab as $k => $v){
            if ($k == "salle_code" || $k == "table_code")
                continue;
            $champs .= $separateur . $k;
            $value .= $separateur . "'" . $v . "'";
            $separateur = ",";
        }
        $champs = '('.$champs.')';
        $value = '('.$value.')';
        $sSQL = "INSERT INTO Commande $champs VALUES $value";
        $config = array(
                        "host" => "localhost",
                        "dbname" => BDD,
                        "port" => 3306,
                        "username" => "root",
                        "password" => ""
                        );
        $connection = new \Phalcon\Db\Adapter\Pdo\Mysql($config);
        $success = $connection->execute($sSQL);
        $id = $connection->lastInsertId();
        return $id;
    }
在connection今天仍然是一个功能月底开放,因此如何关闭它?