database absraction layer

dear all, I'm writing database abstraction layer class (like adoDB but much simpler). What I want to do that it will provide single access function for different type of database. Currently, it will only support mySQL and PostgreSQL.. but I just don't know how to do this with better approach. code snippet.. .. function connect(){ if($this->type == "mysql"){ $this->conid = mysql_connect($this->host,$this->user,$this->pass); } elseif($this->type == "pgsql")){ $this->conid = pg_connect($this->host $this->port $this->db $this->user $this->pass); } else { echo ("database type $this->type not supported"); } } .. any idea of doing such of function alias/wrapper? any help appreciated thanks _______________ adi.aroundbali.com