formulario.php

<form class="form-signin" method="post" action="lib/cadastrouser.php">
                <input type="text" class="form-control" placeholder="Nome" required autofocus name="nome"><br>

                <input type="text" class="form-control" placeholder="Email" required autofocus name="email"><br>

                <input type="password" class="form-control" placeholder="Senha" required name="senha">

                <input type="date" class="form-control" placeholder="Nascimento" required autofocus name="nascimento"><br>

                <input type="text" class="form-control" placeholder="Telefone" required autofocus name="telefone"><br>

                <input type="text" class="form-control" placeholder="Endereço" required autofocus name="endereco"><br>

                <button class="btn btn-lg btn-primary btn-block" type="submit">
                    Cadastrar</button>

                </form>