Evaluate String as Object

Hi, Is it possible to evaluate a string passed to a script as an object? If, for example, I have the following executing in my script: $result = $player_1->execute_query(); // OR $result = $player_2->execute_query(); If I pass a value to a script in the following manner, say: $playername = $_GET["playername"]; Can I convert/evaluate this as an object, i.e.: $result = [VALUE-OF-$playername]->execute_query(); I'd rather not be in a position where I'm doing a raft of if/then statements.... Cheers, bub.