accessing json in php sent by ajax -

in js file i'm sending json object php file don't know how access sent object.

first line in code below give me that:{"id":1,"email":"asd@qwe.co.uk","password":"xxxx","location":"london"}

js file

    app.showalert(json.stringify(profile));      $.ajax({         type: "get",         url:"http://www.domain.co.uk/test-login.php",         datatype: 'jsonp',         data: { data: json.stringify(profile) },         success:function(json){             // stuff json (in case array)             app.showalert(json.stringify(json), "login ok");         },         error:function(){             app.showalert("login faild", "wrong username or password. please try again.");         },     }); 

php file:

<?php  header('content-type: application/json'); $ret=$_get['data'];  $ret=json_decode($ret, true);  echo '['.json_encode($ret[0]).']';  ?> 

php test, because want check if user pass correct details, return json object 'loggedin' => 1 or so, if not 0

i tried access object $ret=$_get['profile'];, didn't help.

my question is: how pass json object , access in php.

you need modify both ajax , php want. i've changed javascript test success/fail within success function. if returning json php, don't want handling failed password in error event.

for php seem getting input , output mixed up. can see input decoded $data variable, , output array in $output until gets encoded , output.

$.ajax({     type: "get",     url:"http://www.domain.co.uk/test-login.php",     datatype: 'jsonp',     data: { data: json.stringify(profile) },     success:function(json){         // stuff json (in case array)         if(json.loggedin == '1'){             alert("logged in");         } else {             alert("failed login");         }     } }); 

php:

$output = array('loggedin' => 0); $data = json_decode($_get['data']);  // shows how access data if($data->email == 'asd@qwe.co.uk' && $data->password = '1234') {     $output['loggedin'] = '1'; }  header('content-type: application/json');  echo json_encode($output);