<?php
$server = "localhost";
$username = "admin";
$password = "admin";
$conn = mysqli_connect($server, $username, $password);
if ($conn->connect_error) {
die("Connessione fallita: " . $conn->connect_error);
}
else {
echo "Connessione riuscita<br>";
}
?>

<?php
session_start();
include "connessioneDB.php"
.
.
.
$queryControlloAccount = "SELECT * FROM accounts WHERE Username = $username OR Email = $email LIMIT 1";
$risultato = mysqli_query($conn, $queryControlloAccount);
$user = mysqli_fetch_assoc($risultato);
.
.
.
?>