if($_SERVER['REQUEST_METHOD'] == 'POST')
{
    if(isset($_POST['name']))
    {
        if(!empty($_POST['name']))
        {
            $name = $_POST['name'];

            $db = new PDO('mysql:host=127.0.0.1;dbname=website', 'root', '');
            $st = $db->prepare('INSERT INTO `people` (`names`) VALUES (:name)');
            $st->bindParam(':name', $name, PDO::PARAM_STR);
            $st->execute();
        }
    }
}