Reg and Login Page Almost figured out--need code help

I created a login and registration page with the following code, but it seems to have a syntax error at the command prompt "die ()", and I'm not sure as to how to fix it?

Name the table "dbUsers." It will need 4 fields:

Name Type Addition
id int(10) Primary Key, AUTO_INCREMENT
username varchar(16) Unique
password char(16)
email varchar(25)

Create a new file and name it dbConfig.php This will file will connect to the database

<?
// Replace the variable values below
// with your specific database information.
$host = "localhost";
$user = "UserName";
$pass = "Password";
$db   = "dbName";

// This part sets up the connection to the 
// database (so you don't need to reopen the connection
// again on the same page).
$ms = mysql_pconnect($host, $user, $pass);
if ( !$ms )
{
echo "Error connecting to database.\n";
}

// Then you need to make sure the database you want
// is selected.
mysql_select_db($db);
?>

<? // Replace the variable values below // with your specific database information. $host = "localhost"; $user = "UserName"; $pass = "Password"; $db = "dbName"; // This part sets up the connection to the // database (so you don't need to reopen the connection // again on the same page). $ms = mysql_pconnect($host, $user, $pass); if ( !$ms ) { echo "Error connecting to database.\n"; } // Then you need to make sure the database you want // is selected. mysql_select_db($db); ?>

Registration name this file "register.php"

<?php

// dbConfig.php is a file that contains your
// database connection information. This
// tutorial assumes a connection is made from
// this existing file.
include ("dbConfig.php");


//Input vaildation and the dbase code
if ( $_GET["op"] == "reg" )
 {
 $bInputFlag = false;
 foreach ( $_POST as $field )
  {
  if ($field == "")
   {
   $bInputFlag = false;
   }
  else
   {
   $bInputFlag = true;
   }
  }
 // If we had problems with the input, exit with error
 if ($bInputFlag == false)
  {
  die( "Problem with your registration info. "
   ."Please go back and try again.");
  }

 // Fields are clear, add user to database
 //  Setup query
 $q = "INSERT INTO `dbUsers` (`username`,`password`,`email`) "
  ."VALUES ('".$_POST["username"]."', "
  ."PASSWORD('".$_POST["password"]."'), "
  ."'".$_POST["email"]."')";
 //  Run query
 $r = mysql_query($q);
 
 // Make sure query inserted user successfully
 if ( !mysql_insert_id() )
  {
  die("Error: User not added to database.");
  }
 else
  {
  // Redirect to thank you page.
  Header("Location: register.php?op=thanks");
  }
 } // end if


//The thank you page
elseif ( $_GET["op"] == "thanks" )
 {
 echo "<h2>Thanks for registering!</h2>";
 }
 
//The web form for input ability
else
 {
 echo "<form action=\"?op=reg\" method=\"POST\">\n";
 echo "Username: <input name=\"username\" MAXLENGTH=\"16\"><br />\n";
 echo "Password: <input type=\"password\" name=\"password\" MAXLENGTH=\"16\"><br />\n";
 echo "Email Address: <input name=\"email\" MAXLENGTH=\"25\"><br />\n";
 echo "<input type=\"submit\">\n";
 echo "</form>\n";
 }
// EOF
?>

<?php // dbConfig.php is a file that contains your // database connection information. This // tutorial assumes a connection is made from // this existing file. include ("dbConfig.php"); //Input vaildation and the dbase code if ( $_GET["op"] == "reg" ) { $bInputFlag = false; foreach ( $_POST as $field ) { if ($field == "") { $bInputFlag = false; } else { $bInputFlag = true; } } // If we had problems with the input, exit with error if ($bInputFlag == false) { die( "Problem with your registration info. " ."Please go back and try again."); } // Fields are clear, add user to database // Setup query $q = "INSERT INTO `dbUsers` (`username`,`password`,`email`) " ."VALUES ('".$_POST["username"]."', " ."PASSWORD('".$_POST["password"]."'), " ."'".$_POST["email"]."')"; // Run query $r = mysql_query($q); // Make sure query inserted user successfully if ( !mysql_insert_id() ) { die("Error: User not added to database."); } else { // Redirect to thank you page. Header("Location: register.php?op=thanks"); } } // end if //The thank you page elseif ( $_GET["op"] == "thanks" ) { echo "<h2>Thanks for registering!</h2>"; } //The web form for input ability else { echo "<form action=\"?op=reg\" method=\"POST\">\n"; echo "Username: <input name=\"username\" MAXLENGTH=\"16\"><br />\n"; echo "Password: <input type=\"password\" name=\"password\" MAXLENGTH=\"16\"><br />\n"; echo "Email Address: <input name=\"email\" MAXLENGTH=\"25\"><br />\n"; echo "<input type=\"submit\">\n"; echo "</form>\n"; } // EOF ?>

Login name this file "login.php"

<?php
session_start();
// dBase file
include "dbConfig.php";

if ($_GET["op"] == "login")
 {
 if (!$_POST["username"] || !$_POST["password"])
  {
  die("You need to provide a username and password.");
  }
 
 // Create query
 $q = "SELECT * FROM `dbUsers` "
  ."WHERE `username`='".$_POST["username"]."' "
  ."AND `password`=PASSWORD('".$_POST["password"]."') "
  ."LIMIT 1";
 // Run query
 $r = mysql_query($q);

 if ( $obj = @mysql_fetch_object($r) )
  {
  // Login good, create session variables
  $_SESSION["valid_id"] = $obj->id;
  $_SESSION["valid_user"] = $_POST["username"];
  $_SESSION["valid_time"] = time();

  // Redirect to member page
  Header("Location: members.php");
  }
 else
  {
  // Login not successful
  die("Sorry, could not log you in. Wrong login information.");
  }
 }
else
 {
//If all went right the Web form appears and users can log in
 echo "<form action=\"?op=login\" method=\"POST\">";
 echo "Username: <input name=\"username\" size=\"15\"><br />";
 echo "Password: <input type=\"password\" name=\"password\" size=\"8\"><br />";
 echo "<input type=\"submit\" value=\"Login\">";
 echo "</form>";
 }
?>

<?php session_start(); // dBase file include "dbConfig.php"; if ($_GET["op"] == "login") { if (!$_POST["username"] || !$_POST["password"]) { die("You need to provide a username and password."); } // Create query $q = "SELECT * FROM `dbUsers` " ."WHERE `username`='".$_POST["username"]."' " ."AND `password`=PASSWORD('".$_POST["password"]."') " ."LIMIT 1"; // Run query $r = mysql_query($q); if ( $obj = @mysql_fetch_object($r) ) { // Login good, create session variables $_SESSION["valid_id"] = $obj->id; $_SESSION["valid_user"] = $_POST["username"]; $_SESSION["valid_time"] = time(); // Redirect to member page Header("Location: members.php"); } else { // Login not successful die("Sorry, could not log you in. Wrong login information."); } } else { //If all went right the Web form appears and users can log in echo "<form action=\"?op=login\" method=\"POST\">"; echo "Username: <input name=\"username\" size=\"15\"><br />"; echo "Password: <input type=\"password\" name=\"password\" size=\"8\"><br />"; echo "<input type=\"submit\" value=\"Login\">"; echo "</form>"; } ?>

Members Area name this file "members.php", and include on pages that are only for registered users

<?php
session_start();

if (!$_SESSION["valid_user"])
{
// User not logged in, redirect to login page
Header("Location: login.php");
}

// Member only content
// ...
// ...
// ...

// Display Member information
echo "<p>User ID: " . $_SESSION["valid_id"];
echo "<p>Username: " . $_SESSION["valid_user"];
echo "<p>Logged in: " . date("m/d/Y", $_SESSION["valid_time"]);

// Display logout link
echo "<p><a href=\"logout.php\">Click here to logout!</a></p>";
?>

?php session_start(); if (!$_SESSION["valid_user"]) { // User not logged in, redirect to login page Header("Location: login.php"); } // Member only content // ... // ... // ... // Display Member information echo "<p>User ID: " . $_SESSION["valid_id"]; echo "<p>Username: " . $_SESSION["valid_user"]; echo "<p>Logged in: " . date("m/d/Y", $_SESSION["valid_time"]); // Display logout link echo "<p><a href=\"logout.php\">Click here to logout!</a></p>"; ?>

logout name this file "logout.php"

<?php
session_start();
session_unset();

session_destroy();
// Logged out, return home.
Header("Location: index.php");
?>

<?php session_start(); session_unset(); session_destroy(); // Logged out, return home. Header("Location: index.php"); ?>