php - Retrieving Database Data during LogIn -


i'm using slim , ajax develop mobile application. in database have column stores session codes logins. need able once logged in, compare username entered database , retrieve sessioncode based on that.

my current php this:

$app->post('/login/', 'login'); function login() {            $request = \slim\slim::getinstance()->request();     $q = json_decode($request->getbody());     //$hashedpassword = password_hash($q->password, password_bcrypt);       $sql = "select * users username=:username , password=:password";     try {         $db = getconnection();         $stmt = $db->prepare($sql);                  $stmt->bindparam("username", $q->username);                     $stmt->bindparam("password", $q->password);         $stmt->execute();         //$row=$stmt->fetch(pdo::fetch_assoc);         $row=$stmt->fetch(pdo::fetch_obj);         //$verify = password_verify($q->password, $row['password']);         $db = null;         echo json_encode($row);                      } catch (pdoexception $e) {         echo $e->getmessage();     } } //php 5.4 login  $app->get('/getsessioncode/:username','getsessioncode'); function getsessioncode($username) {     $request = \slim\slim::getinstance()->request();     $q = json_decode($request->getbody());      $sql = "select * users username=:username";     try{         $db = getconnection();         $stmt = $db->prepare($sql);         $stmt->bindparam("username", $username);         $stmt->execute();         $row=$stmt->fetchall(pdo::fetch_obj);         $dbh=null;         echo json_encode($row);     }     catch(pdoexception $e){         if(db != null) $db = null;                 echo $e->getmessage();     } }

ajax code:

    $("#checklogin").click(function() {        username = $("#enteruser").val();      $.ajax({         type: 'post',         contenttype: 'application/json',         url: rooturl + '/login/',         datatype: "json",         data: checklogin(),         success: function(data)         {             if(data != false)             {                                    $.ajax({                     type: 'get',                     url: rooturl + "/getsessioncode/" + username,                     datatype: "json",                     success: sessiondata                 });             }             else             {                 alert("username and/or password incorrect");             }         }     }) }); function checklogin(data) {                    return json.stringify({         "username": $("#enteruser").val(),         "password": $("#enterpass").val(),     });                  }    function sessiondata(data){         session = data.sessioncode;         alert(username);         alert(session);          $.mobile.changepage("#mainmenu"); }

when run application , log in. runs though no problem when reaches alert(session) returns undefined. have both session , username set globally variables isn't issue , when reaches alert(username), returns username entered.

i able solve issue adding in loop sessiondata function

function sessiondata(data){     for(var = 0; < 1; i++)     {         sessionstorage.code = data[i].sessioncode;     }          $.mobile.changepage("#mainmenu"); }

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