Using PHP Data Object.

exemploPDO.php

$db = new PDO('mysql:host=localhost:3306;dbname=db','root','');
$stm = $db->prepare('SELECT * FROM db.usuario');
$result = $stm->execute();
$usuarios = array();
 	
while($row = $stm->fetchObject())
{
    $usuarios[] = $row->nome;
}
/*

@ Alternate syntax;

*/
foreach($usuarios as $id => $nome):

    echo 'Usuario ' .strtolower($nome). '<br/>';
    echo 'ID '.$id.'<p/>';

endforeach;