php - Cannot echo database items -

i trying echo out database items in php nothing seems coming out. initialize php required calls out database.php stores configurations show below.what doing wrong?

sql statement:

<?php require_once("includes/initialize.php");  $username = $_post["name"]; $useremail = $_post["email"];  $sqlname = "select name individual"; $sqlemail = "select email individual";  if ($sqlemail == $useremail || $sqlname == $username){  $message = "hi " + $username + "this new password.";  echo $message;  }  ?> 

the database configurations in php file called database.php.

database.php:

<?php  require_once ("config.php");   class mysqldatabase {  private $connection;  function __construct() {     $this->connection = mysqli_connect(db_server, db_user, db_pass, db_name) or die                     ("database connection failed: " .                     mysqli_connect_error() .                     " (" . mysqli_connect_errno() . ")"     );     $db_select = mysqli_select_db($this->connection, db_name); }  public function close_connection() {     if (isset($this->connection)) {         mysqli_close($this->connnection);         unset($this->connection);     } }  public function query($sql) {     $result = mysqli_query($this->connection, $sql);     $this->confirm_query($result);     return $result; }  private function confirm_query($result) {     if (!$result) {         die("database query failed.");     } }  public function escape_value($string) {      $escaped_string = mysqli_real_escape_string($this->connection, $string);     return $escaped_string; }  public function fetch_array($id){     if (mysqli_fetch_array($id)) {         return true;     }      }     }      $database = new mysqldatabase();     $db = & $database;     ?> 

your not running query.. ..or getting results..

$sqlemail = "select email individual";  $query = $db->query($sqlemail);  $user = $db->fetch_array($query);  var_dumpr($user); 

hope helps..