Extending a database class

[MV]

I have a database:\[code\] class dbConnect{ var $strHost = ""; var $strDatabase = ""; var $strUser = ""; var $strPassword = "";var $intLinkID = 0;var $intQueryID = 0;var $arrRecord = array();var $intRow;var $intErrno = 0;var $strError = "";function dbConnect(){ $this->Connect();}function dbHalt($strError){ $objError = new errorHandle(); $objError->reportError("Database error: $strError", false); $this->intErrno = mysql_errno($this->intLinkID); $this->strError = mysql_error($this->intLinkID); $strError = sprintf("MySQL Error: %s (%s)", $this->intErrno, $this->strError); $objError->reportError($strError, true);}function Connect(){ if (0 == $this->intLinkID) { $this->intLinkID=mysql_connect($this->strHost, $this->strUser, $this->strPassword); if (!mysql_select_db($this->strDatabase, $this->intLinkID)) { $this->dbHalt("cannot use database ". $this->strDatabase); } } if (!$this->intLinkID) { $this->dbHalt("Database connection failed"); }} class dbMain extends dbConnect{ // Database connection settings. // Dev server. var $strHost = 'db_host_here'; var $strUser = 'db_User_here'; var $strPassword = 'db_password_here'; var $strDatabase = 'db_name_here';}\[/code\]This works fine when calling $objDB = new dbMain();But what I want is to dynamically set the database details in another class (for a master CMS) eg:\[code\]$objDB = new dbMain($user, $pass, $dbname, $dbhost);\[/code\]