Untitled

<?php
    ob_start();
    header('Content-Type: text/html; charset= utf-8');
    session_start();

    $dbconnect = mysql_connect("localhost", "root", "");
    mysql_select_db("mysite_bd");
    $result = mysql_query("SELECT nick, email, name, password FROM users");
    $list_f = mysql_query("SELECT * FROM users");
    $n = mysql_num_rows($list_f);
    for ($i = 0; $i < $n; $i++ ){
        if(($_SESSION['logged_user'] == mysql_result($result, $i, nick)) and ($_POST['password'] == "")){
                        $password = mysql_result($result, $i, password);
        }
    }
    $name = $_POST["name"];
    $email = $_POST['email'];
    $nicks = $_SESSION['logged_user'];
    $update_sql = "UPDATE users SET name='$name', email='$email', password='$password' WHERE nick = '$nicks'";
    mysql_query($update_sql);
    mysql_close($dbconnect);
    if($update_sql){
        SetCookie("ResultEdit","1",time()+2);
    }
    header('Location: edit.html');
?>
<head>
    <title>Edit.Php</title>
</head>
<body>
</body>