Dynamic Class Assignment?

[lostarts]

I'm trying to do something pretty simple, but my newbie status with PHP is giving me some grief. I want to create a factory method that can create a dynamic class given a classname:

function _factory( $returnobj, $classname="")
{
$returnobj = new //$classname// ;

return $returnobj ;
}

What do I put where //$classname// is?

Thanks (I've been struggling with this for hours).

lostarts

[lostarts]

Well, I found the answer. Here it is if it helps anyone:

function _factory( $returnobj, $classname="")
{
$returnobj = & new $classname ;

return $returnobj ;
}