//Connection a la bdd

<?php
$dbhost = "mysql.alwaysdata.com";
$dbname = "sh3nzi_test";
$dbuser = "sh3nzi";
$dbpass = "dbc22e0ae";

$user = $_GET['username'];
$pass = $_GET['password'];

mysql_connect($dbhost, $dbuser, $dbpass)or die("3");
$verb = mysql_select_db($dbname);

if ($verb)
{
    $sql = "SELECT * FROM login WHERE username='".$user."'";
    $quer = mysql_query($sql) or die("4");
    $num = mysql_num_rows($quer);
    if ($num == 0)
    {
            echo("0");
            exit();
    }
    else
    {
            $row = mysql_fetch_object($quer);
            $passwort = $row->passwort;
            if ($passwort == $pass)
            {
                  echo("1");
        }
        else
        {
              echo("2");
        }
    }
}

//Enregistrement sur la bdd

<?php
$dbhost = "hote";
$dbname = "nom";
$dbuser = "username";
$dbpass = "pass";

$user = addslashes($_POST["username"]);
$pass = addslashes($_POST["password"]);
$hwid = addslashes($_POST["hwid"]);

mysql_connect($dbhost, $dbuser, $dbpass)or die("3");
$verb = mysql_select_db($dbname);

if ($verb)
{
    if (!empty($user) and !empty($pass) and !empty($hwid))
    {
        if ( mysql_num_rows( mysql_query( "SELECT * FROM login WHERE username='".$user."'" ) ) == 0 ) {
            $sqlquery = "INSERT INTO login (username, password) VALUES('$user','$pass')";
            $results = mysql_query($sqlquery);
            $hwidfile = fopen("hwid.txt","a");
            fwrite($hwidfile, $hwid."\r\n");
            fclose($hwidfile);
            echo("1");
        }else{
            echo("2");
        }
    }else{
        echo("0");
    }
}
mysql_close();
?>