member area

[djp_phillips]

I followed this tutorial
http://www.trap17.com/index.php/php-...ial_t7887.html

And found it quite simple and easy, but I am having a problem, on the register part i find a problem that I don't understand, when I register on this page:

http://www.euroherp.com/register.php

and click ok, I get an error message telling me an error occured on line 56, which is the line saying:

"Header("Location: register.php?op=thanks"); "

So I don't understand, can someone help me?

Also, when I look at my database, the user I just submitted is there, and when I go to the "login page" (http://www.euroherp.com/login.php) and login with the inofrmation that is in my database, I get told "Sorry, could not log you in. Wrong login information."

[djp_phillips]

This is my code on the registration page (http://www.euroherp.com/register.php), that after a success ful registration i get this error message
===
Warning: Cannot modify header information - headers already sent by (output started at /home/content/d/a/n/danielphillips/html/01euroherp/register.php: in /home/content/d/a/n/danielphillips/html/01euroherp/register.php on line 56
===
Where line 56 is to do with this:

===

else
  {
  // Redirect to thank you page.
  Header("Location: register.php?op=thanks");
  }
 } // end if

===

Here is the page code:

<?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
?>

Also after verifying in mySQL the registration, and finding it successful, I go to the login page (http://www.euroherp.com/login.php)
and I already have these error messages:

===
Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/content/d/a/n/danielphillips/html/01euroherp/login.php: in /home/content/d/a/n/danielphillips/html/01euroherp/login.php on line 9

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/content/d/a/n/danielphillips/html/01euroherp/login.php: in /home/content/d/a/n/danielphillips/html/01euroherp/login.php on line 9
===

And when I enter my correct login info, I get refused

Here is my code for the login page:

===

<?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>";
 }
?>

===