Sessions tutorial again

Original - php Code function login ($forms) { $username = $forms["username"]; $password = $forms["password"]; $sql = "SELECT ID FROM click_login WHERE Username='$username' AND Password='$password'"; $result = mysql_query($sql) or die(mysql_error()); $id = mysql_fetch_assoc($result); return $id; }

 
function login ($forms)
{
  $username = $forms["username"];
  $password = $forms["password"];
  $sql = "SELECT ID FROM click_login WHERE Username='$username' AND Password='$password'";
  $result = mysql_query($sql) or die(mysql_error());
  $id = mysql_fetch_assoc($result);
  return $id;
} 

Original - php Code session_start(); include ("functions.php"); if($_POST) { $error = login_check($_POST); if (trim($error)=="1") { $_SESSION["id"] = login($_POST); Header("Location: ./index.php"); // Redirect correct member exit(); } else { print "Error:$error"; } } print("<form method="post" action="{$_SERVER['PHP_SELF']}"> Username : <input type="text" name="username"><br> Password : <input type="password" name="password"><br> <input type="submit" value="Login"> </form>");

 
session_start();
include ("functions.php");
if($_POST)
{
  $error = login_check($_POST);
  if (trim($error)=="1")
  {
    $_SESSION["id"] = login($_POST);
    Header("Location: ./index.php"); // Redirect correct member
    exit();
  }
  else
  {
    print "Error:$error";
  }
}
 
print("<form method="post" action="{$_SERVER['PHP_SELF']}">
Username : <input type="text" name="username"><br>
Password : <input type="password" name="password"><br>
<input type="submit" value="Login">
</form>");