mira este es mi login .php
<?php
session_start();
require("conect.php");
$username=$_POST['usuario'];
$pass=$_POST['passwrd'];
$sql= "SELECT * FROM reguser WHERE mail = '$username' and pass=md5('$pass')";
$result=mysql_query($sql)or die("No se encontro");
// counting table row
$count = mysql_num_rows($result);
// If result matched $username and $password
if($count == 1){
$_SESSION['loggedin'] = true;
$_SESSION['username'] = $username;
$_SESSION['start'] = time();
$_SESSION['expire'] = $_SESSION['start'] + (5 * 60) ;
echo "<br> Bienvenido! " .$_SESSION['username'];
$_SESSION['origin']="../index.html";
}
else {
echo "<br/>Username o Password estan incorrectos.<br>";
echo "<a href='../index.html'>Volver a Intentarlo</a>";
}
?>