print_r($_POST);
<?php
if (isset($_POST['email'])) {
echo('<input type="test" class="form-control" name="activation" placeholder="License key222" required>
</br></br>
');
}
else {
echo('<form class="form-signin" role="form" action="" method="post">
<h4 class="form-signin-heading"></h4>
<input type="text" class="form-control" name="email" placeholder="email111111" required autofocus>
</br></br>
<button class="btn btn-lg btn-primary btn-block" type="submit" name="login">Post</button>
</form>
');
}
?>