Selecting Database With MySQL

<?php
  echo "<table>";
  echo "<tr><th>Id</th><th>Name</th><th>Surname</th></tr>";
  class table_rows extends recursive_array_iterator {
    function __construct($it) {
      parent::__construct($it, self::LEAVES_ONLY);
    }  	    
    function current_row() {
      return "<td>" . parent::current(). "</td>";
    }
    function begin_children() {
      echo "<tr>";
    }
    function end_children() {
      echo "</tr>" . "\n";
    }
  } 
  $server = 'server';
  $user = 'user';
  $pass = 'pass';
  $db = 'db';  	
  try {
    $con = new PDO("mysql:host=$server;dbname=$db", $user, $pass);
    $con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    //prepare the statement
    $statement = $con->prepare("SELECT user_id, name, surname FROM users");
    // make the query array associative
    $statement->execute();
    $result = $statement->setFetchMode(PDO::FETCH_ASSOC);
    //iterate through the queried data
    foreach(newtable_rows(newrecursive_array_iterator($stmt->fetchAll())) as $k => $v) {
      echo $v;
      }
  } catch(PDOException $e) {
    //set up an error message
    echo "Error message: " . $e->getMessage();
  }
  $con = null;
  echo "</table>";
?>