$pdo = new PDO('mysql:host=localhost;dbname=jmyp','root','root');

$pdo->exec('set names utf8');

$sql = "select * form admin";

$smt = $pdo->query($sql);

$rows = $smt->fetchAll(PDO::FETCH_ASSOC);

echo '<pre>';
print_r($rows);
echo '</pre>';