json - Parse response and response headers PHP -

i'm working on app supposed status , date account created. have response (in json format) can't seem parse neither response nor response headers. don't show echo. extract 2 variables of response , since response header delivers cookie, , store next response. here response received:

http/1.1 100 continue http/1.1 200 ok date: fri, 27 jun 2014 14:28:38 gmt server: apache set-cookie: ci_session=one_very_long_cooooookie; expires=fri, 27-jun-2014 16:28:38 gmt; path=/ status: 200 content-length: 304 content-type: application/json         {         "success": true,         "user": {             "user_id": "2k287as952",             "username": "myusername",             "requesting_ip": "123.456.789.012",             "account_created_at": "2012-08-13 15:57:35",             "online_status": "1",             "auth_token": "26cc3bcf-2cb5-a90e-b1ca-76d40c34e097"         }     } 

now here have been trying response header per php docs should give me "set cookie" variable comes empty. post .php file here if need be.

edit tried curl , i'm getting response. here code i'm trying. how parse response get

thanks in advance

<?php //set variables ini_set('display_errors',1); ini_set('display_startup_errors',1); error_reporting(-1);  $url = 'http://webpage.api.com'; $data = http_build_query(     array('password' => 'myfunkypassword', 'email' => 'some_email@gmail.com') ); $curl = curl_init();  curl_setopt($curl, curlopt_url, $url); curl_setopt($curl, curlopt_httpget, true); curl_setopt($curl, curlopt_post, true); curl_setopt($curl, curlopt_verbose, true); curl_setopt($curl, curlopt_returntransfer, true); curl_setopt($curl, curlopt_postfields, $data); curl_setopt($curl, curlopt_header, true); curl_setopt($curl, curlopt_httpheader, array(     'content-type: application/x-www-form-urlencoded',     'user-agent: dalvik/1.6.0 (linux; u; android 2.3.3; htc pyramid build/gri40)',     'host: api.hackex.net',     'expect: 100-continue',     'host: api.hackex.net'  ));  $result = curl_exec($curl);    print_r($result);  //~ // limite positivo //~ $header_size = curl_getinfo($curl, curlinfo_header_size); //~ $header = substr($result, 0, $header_size); //~ $body = substr($result, $header_size); //~ list($header, $body) = explode("\r\n\r\n", $result, 2); echo curl_getinfo($curl, curlinfo_http_code);   curl_close($curl); ?> 

var req = $.ajax({                    url:___,                    type:___,                    data:____,                    datatype:____,                    cache:false                  });  req.done(function(data){         // parse response stored in data         var parseddata = json.parse(data);  }); 

this skeleton. included needed values