Arquivos index.php do primeiro tutorial de PHP do blog.

index.php

<?php

require_once "src/Sys/Conexao.php";

use Sys\Conexao;

try {
	$conexao = new Conexao("localhost", "sistema_login", "root", "");
	$conexao->executar("INSERT INTO usuarios (nome, email, senha, cadastro) VALUES (?, ?, ?, ?)", array('Administrador', 'admin@gmail.com', md5('123'), date('Y-m-d')));
} catch (\PDOException $ex) {
	echo $ex->getMessage();
}