[RESOLVED] Headers already sent.

[Neko_D]

So I have this script to build cookies. Problem is that whenever I run the script it keeps telling me that I have already sent the headers. I am not sure when or where they get sent. Any help

Here is the script I run

include("include_files.php");
  $link = mysql_connect("localhost", "dblankenbuhler", "schoolreiji");
  mysql_select_db("wpdb", $link);
  if($_POST["give"])
  {
       $res = mysql_fetch_array(mysql_query("SELECT * FROM customers WHERE id = ".$_POST["id"]), MYSQL_ASSOC);
       $cust = buildObjectFromResult($res, "Customer");
       setcookie("student", $cust->id, 0, "/");
  }//end if

  else if($_POST["remove"])
  {
       $res = mysql_fetch_array(mysql_query("SELECT * FROM customers WHERE id = ".$_POST["id"]), MYSQL_ASSOC);
       $cust = buildObjectFromResult($res, "Customer");
       setcookie("student", $cust->id, time()-60, "/");
  }//end else if

  else if($_GET["item_key"])
  {
       setcookie($_GET["item_key"], 0, time()-60, "/");
  }//end else if
  header("Location:".$_SERVER["HTTP_REFERER"]);
  

Here is the error I get:

Warning: Cannot modify header information - headers already sent by (output started at /var/www/repo_code/include_files.php:9) in /var/www/repo_code/buildcookiethenreturn.php on line 9

Warning: Cannot modify header information - headers already sent by (output started at /var/www/repo_code/include_files.php:9) in /var/www/repo_code/buildcookiethenreturn.php on line 23

Here is the script called include_files:

include("mysqlbuilder.php");
  include("utilityfunctions.php");

  function __autoload($class)
  {
     include_once("object/$class.php");
  }//end __autoload

The two files included in that script are just a bunch of functions

[NogDog]

Make sure there is nothing outside of the <?php . . . ?> tags -- including spaces or newlines -- in your included files. If there is, it will cause output to be sent.

One useful trick is to leave out the closing ?> in your include files, so that you do not accidentally end up with a newline after it. (The file will still include/parse just fine without it.) Obviously, you still have to have the opening <?php tag, so make sure there is absolutely nothing before it.

[Neko_D]

Thanks that worked for now. I am confused as to why it stopped working... but ok thanks for the help