title: Check if the user is connected to facebook and then check if he liked a page
body: <p>Is there is any way of checking if the user is connected to facebook on my external page without having them to allow one of my applications?
  And the same question goes for "check if the user liked a page".</p>
  
  <p>I have checked around 20 questions and 3-4 tutorials and seems like all of them are talking about internal scripts (tabs inside a fanpage/apps canvas pages) and my question is directed only to EXTERNAL pages.</p>
  
  <p>If it is possible, please shout here a code example (PHP+JavaScript). Thanks!</p>