returning multiple values using php to jquery.ajax with json -

I am trying to make simple calls to data from the database using php and ajax. I need many results, so I am using the json method but it is not working.

  $ Ajax ({type: "POST", data: "qid = 162", url: "activity_ajax.php", data type: Jason, success: function data) {warning (data.first);}}); "Activity":  ;    
 
 
 You can send multiple data to the array and then press   
 '1234 unlisted drive');  Echo json_encode ($ output, JSON_FORCE_OBJECT);   
 On the other hand you can use the value like this  
  success: work (resp.first); alerts (Resp.last); Warning (resp.address);});