processo.php

<?php

include("conexao.php");

$usuario = filter_input(INPUT_POST, "usuario", FILTER_SANITIZE_STRING );
$email = filter_input(INPUT_POST, "email", FILTER_SANITIZE_EMAIL);
$senha = filter_input(INPUT_POST, "senha", FILTER_SANITIZE_STRING );

//echo "user: $usuario";
//echo "email: $email";
//echo "senha: $senha";

$resultado_query = ("insert into usuarios (nome,email,senha)values('$usuario','$email','$senha')");
$resultado_conexao = mysqli_query($conn, $resultado_query);