<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "primo";
$conn = mysqli_connect($servername , $username , $password , $dbname);
if(!$conn){
	die("connessione fallita:" . mysqli_connect_error());
	}

	$sql = "SELECT * FROM utenti";
	$result = mysqli_query($conn, $sql);
	echo mysqli_num_rows($result);