home e conexao.php

<?php
    include_once 'conexao.php';
?>

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>

</body>
</html>

<?php

$dbServername = "localhost";
$dbUsername = "root";
$dbPassword = "";
$dbName = "sistema_login";

$conn = mysqli_connect($dbServername, $dbUsername, $dbPassword, $dbName);