$dbUser = 'dbUser';
$dbHost = 'localhost';
$dbName = 'dbName';
$dbPassword = 'dbPassword';
$dbCharset='utf-8';
$dsn = sprintf("mysql:host=%s;dbname=%s;charset=%s",$dbHost,$dbName,$dbCharset);
$pdo = new PDO($dsn,$dbUser,$dbPassword);

$sql = "INSERT INTO test (testField) VALUES('тест')";
$pdo->exec($sql);

$sql = "SELECT * FROM test";
$statement = $pdo->prepare($sql);
$statement->execute();
$rows = $statement->fetchAll();


header('Content-Type:text/html;charset=utf-8');
echo '<pre>'.print_r($rows,true).'</pre>';