title: Facebook Connect PHP SDK - Differents accounts
body: <p>I'm using Facebook Connect (PHP SDK) in my website.</p>
  
  <p>I have 2 kind of users to sing in new user in my website (Premium User and Normal User) and I want to offer Facebook Login to both insted fill new form.</p>
  
  <p>If the user login with Facebook, but doesn't have a record in database, I have to do it, using its Facebook email. Premium Users are recorded in table1 and Normal Users are recorded in table2. </p>
  
  <p>The question is: how can I dettect what user logged with Facebook to check if it's already recorded in its table (in Facebook returning page)?</p>
  
  <p>Just to clarify: I have two forms (one for Normal User and another to Premium User), and each form has a Facebook Loggin button.</p>
  
  <p><img src="https://i.stack.imgur.com/gkV5Z.png" alt="enter image description here"></p>
  
  <p>Thanks.</p>