API LOGIN

<?php
  header('Access-Control-Allow-Origin: *');
  require_once('supports/connection.php');
  $username = (isset($_POST['username']) && !empty($_POST['username']))?$_POST['username']:"";
  $password = (isset($_POST['password']) && !empty($_POST['password']))?$_POST['password']:"";

  $sql = "SELECT * FROM GVEmployeeAccount WHERE username = ? and password = ?";
  $data = array($username,$password);
  $stmt = $conn->prepare($sql);
  $stmt->execute($data);
  $row = $stmt->fetch(PDO::FETCH_NUM,0);

  $result[] = array("employeeID" => $row[0],"username" => $row[1]);

  if(!empty($row)){
    $json = array("results" => $result);
  }else{
    $json = "Failed";
  }

  $conn = null;
  echo json_encode($json);
?>