Copyright (c) 2010 Last.fm. 
  
   Features:
   
   * Full support for GET, POST, auth
   * takes your API_KEY, API_SECRET and API_SK (session key) from env - so you can put it in .bashrc
   
   Installation notes:

   **Please note** this is not currently compatible with PHP 8. Use PHP 7.
   
   If you have proper PHP PEAR set up then you only need ./client.php. The other files are usually installed
   by "pear install". But, they're here because it makes things easy.


   Setup:
   
   1. First, put your API_KEY and API_SECRET into the environment (you can find them at http://www.last.fm/api/account)
      $ export API_KEY=xxxxxxxxxxxx
      $ export API_SECRET=xxxxxxxxxx
   2. Now, use the client to get a token
      $ php ./client.php GET --method=auth.getToken
   3. Authorise that token at http://www.last.fm/api/auth/?api_key=API_KEY&token=TOKEN (change the API_KEY and TOKEN)
   4. Now, use the client to get a session key
      $ php ./client.php GET --method=auth.getSession --token=TOKEN
   5. Now you can take the Session key and put it in API_SK:
      $ export API_SK=xxxxxxxxxxx
      This key should be infinite.
   6. Finally, put all 3 export lines into ~/.bashrc
   
   
   *******
   
   Examples:
   
   Simple example: artist.getInfo (works without API_SK)
     $ php ./client.php GET --method=artist.getInfo --artist=Radiohead
    
   Logged in example: update your now playing track (requires API_SK)
     $ php ./client.php POST --artist="Weather Report" --method=track.updateNowPlaying --track="Man In The Green Shirt"