public function selectAll()
 {
     $all = array();
     if ($this->conn) {
         $query = "SELECT * FROM maps";
         $res = mysql_query($query, $this->conn);
         if ($res) {
             while ($row = mysql_fetch_assoc($res)) {
                 $m = new Map();
                 $m->setId((int) $row['id']);
                 $m->setName($row['name']);
                 $m->setTiles($row['tiles']);
                 array_push($all, $m);
             }
         }
     }
     return $all;
 }
<?php

include "MapDAO.php";
include "Map.php";
$mdao = new MapDAO();
$m = new Map();
$m->setTiles($_POST['tiles']);
$m->setName($_POST['name']);
$mdao->insert($m);