matant

hello, i am new in php and i would like to develop a login screen in android. my server side is developed in php and for some reason i get every request the follwoing error: "no such file or directory". i have 1 index file and 3 files insdie the "include" directory. this is my files code: index.php <?php /** * Created by PhpStorm. * User: matant * Date: 4/29/2015 * Time: 4:57 PM */ $data = $_SERVER['HTTP_JSON']; $data = json_decode($data); $temp = $data->tag; if($temp == 'login') { $tag = $data->tag; $temp = 'insdieif'; require_once 'include/DB_Functions.php'; $db = new DB_Functions(); $response = array("tag" => $tag, "error"=>FALSE); //login if($tag == 'login') { $email = $data->email; $password = $data->password; $user = $db->getUserDet($email,$password); if($user != false){ $response["error"] = FALSE; $response["user"]["username"] = $user["usern"]; $response["user"]["email"] = $user["email"]; echo json_encode($response); }else { $response["error"] = true; $response["error_msg"] = "Incorrect Email or Password!"; echo json_encode($response); } }else { $response["error"] = true; $response["error_msg"] = "This is not Login request!"; echo json_encode($response); } } else { $response["tag"] = $temp; $response["error"] = true; $response["error_msg"] = "tag parameter is missing"; echo json_encode($response); } DB_Functions.php <?php /** * Created by PhpStorm. * User: matant * Date: 4/29/2015 * Time: 3:57 PM */ class DB_Functions { private $db; function _contrust() { require_once 'DB_Connect.php'; $this->db = DB_Connect(); $this->db->connect(); echo $this->db; } function _destruct() { // $this->close(); } public function getUserDet($email, $pass) { $res = mysql_query("SELECT * FROM users WHERE email = '$email'") or die (mysql_error()); $num_of_rows = mysql_num_rows($res); if ($num_of_rows > 0) { $res = mysql_fetch_array($res); $restemp = $res['password']; if ($pass == $restemp) return $res; else return false; } } } ?> DB_Connect.php: <?php /** * Created by PhpStorm. * User: matant * Date: 4/29/2015 * Time: 3:47 PM */ class DB_Connect{ function _construct(){ } function _destruct(){ } public function connect(){ require_once 'Config.php'; $con = mysql_connect("DB_Host","DB_User","DB_password"); if(!$con) { die('could not connect:'.mysql_error()); } else { mysql_select_db(DB_database, $con); } return $con; } public function close() { mysql_close(); } } ?> Config.php: <?php /** * Created by PhpStorm. * User: matant * Date: 4/29/2015 * Time: 3:35 PM */ define("DB_Host","sqlserver"); define("DB_User","user"); define("DB_password","pass"); define("DB_database","b12_16183751_gpsport"); ?>