<?php
include ("config.php");

$username=($_POST['username']);
$password=($_POST['password']);
if(isset($_POST['username']))
$query="SELECT * FROM accesso WHERE username='".$username."'AND password'".$password."' LIMIT 1" or die(mysql_error());
$result=mysql_query($query)or die(mysql_error());
if (mysql_num_rows($result)== 1){

echo "accesso effettuato correttamente";

}
else{
echo "accesso negato!";
exit();

}


?>


dove sbaglio???