<?php
$conexao = mysql_pconnect(localhost,root,"123");
mysql_select_db(teste,$conexao);
mysql_query("SET NAMES 'utf8'");
mysql_query('SET character_set_connection=utf8');
mysql_query('SET character_set_client=utf8');
mysql_query('SET character_set_results=utf8');

if(isset($_POST['login']))
{
    $user = $_POST['user'];
    $pass = $_POST['pass'];
    if( isset($user) && isset($pass))
    {
        $user = mysql_real_escape_string($user);
        $pass = md5($pass);
        $query = "SELECT id FROM users WHERE pass='$pass' AND user='$user'";
        $resultado = mysql_query($query,$conexao);

        if(mysql_num_rows($resultado) == "1")
        {
            $row = mysql_fetch_array($resultado, MYSQL_ASSOC);
            $id = $row['id'];

            session_start();

            $_SESSION['connected'] = $id .":" . $user . ":" . $pass;

            header("location: #");
        }
        else
        {
            ?>
            <div style="width: 220px; margin: 0 auto 0 auto; padding: 50px 0 0 0">
                <div style="line-height:256px;font-size:24px;">Incorrect Info</div>
                <script> setTimeout("location.href = \'/login.php\';",1200); </script>
            </div>
            <?php
        }
    }

}
else
{
    session_start();
    if(isset($_SESSION['connected']))
    {
        if(isset($_POST['exit']))
        {
            session_destroy();
            ?>
            <script> setTimeout("location.href = \'/login.php\';",0); </script>
            <?php
        }
        else
        {
        //codigo normal sem login ou redirect pra pagina do user
        ?>
        <div style="width: 220px; margin: 0 auto 0 auto; padding: 50px 0 0 0">
        Connected<br />
        <form id="exit" method="post" action="#"><br />
            <input type="submit" alt="Exit" value="Exit" name="exit"  />
        </form>
        </div>

        <?php
        }
    }
    else
    {
        ?>
        <div style="width: 220px; margin: 0 auto 0 auto; padding: 50px 0 0 0">
        <form id="login" method="post" action="#">
            <table style="border-collapse:collapse;width: 220px;">
                <tr> <td>User:</td> <td><input type="text" name="user" alt="User" size="15"/></td></tr>
                <tr> <td>Pass:</td> <td><input type="password" name="pass" alt="Pass" size="15"/></td></tr>
                <tr> <td colspan="2"><input type="submit" alt="Login" value="Login" name="login"  /><br /></td></tr>
            </table>
        </form>
        </div>
        <?php
    }
}
?>