返回Doctrine_collection null

i have a very simple question. i searched for it everywhere but i didn't find anything.

i have a Doctrine query like this:

return Doctrine_Core::getTable('something')->createQuery()->where('where clause')- 
>execute();

i want to check whether it returns something or not. just it. if it's content is null i don't do other stuff. empty doesn't work, isset doesn't work ,count doesn't work . what am i suppose to do?

i know it's so simple but i don't know how to do it.

any suggestions would be appreciated.

Try the following code:

return Doctrine_Core::getTable('something')
    ->createQuery()->where('where clause')->count();

$obj = Doctrine_Core::getTable('something')->createQuery()->where('where clause')->execute();

if ($obj == null) { }enter code here

else { }