Untitled

How do I run code based on the true class name of an object?
if($myobject instanceof class1){
}elseif($myobject instanceof class1){
}

switch(get_class($myobject)){
    case 'class1':
       break;
    case 'class2':
       break;
}

function objectProcessor_A($o) {}
function objectProcessor_B($o) {}
function objectProcessor_C($o) {}

foreach($objects AS $o) {
    if(function_exist("objectProcessor_" . get_class($o)))
        call_user_func("objectProcessor_" . get_class($o), $o);
}

class OFactory {
    static function getO($type) {
        $r = new $type();
        if($type === "A") {
            $r.processor = function() {...};
        } else if($type === "B") {
            $r.processor = function() {...};
        } else if($type === "C") {
            $r.processor = function() {...};
        }
        return $r;
    }
}

$a = OFactory::getO("A");
call_user_func($a->processor);

$b = OFactory::getO("B");
call_user_func($b->processor);