title: Firebase JS Authentication cookies
body: <p>I'm intending on using PHP to manage my application. I'm using JS to register and signup to auth. I then intend on using cookies to get this in PHP.</p>
  
  <p>I just wondered how Firebase keeps its authentication peristant. I assumed cookies but when I checked there were no cookies from that site.</p>
  
  <p>If there is cookies, what are the titles etc as I want to use them in the PHP.</p>
  
  <p>Thank you</p>