another header problem

[garydt]

I can't see what I'm outputting to the screen before the headers as i'm gettinng 'cannot modify header' error.

<?php require_once('Connections/elvisdb.php'); ?>
<?php
session_start();
?>

  <?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}
$user = ($_SESSION['MM_Username']);
mysql_select_db($database_elvisdb, $elvisdb);
$query_Recordset3 = "SELECT * FROM userinformation ORDER BY id DESC";
$Recordset3 = mysql_query($query_Recordset3, $elvisdb) or die(mysql_error());
$row_Recordset3 = mysql_fetch_assoc($Recordset3);
$totalRows_Recordset3 = mysql_num_rows($Recordset3);
$field = $row_Recordset3['id'];
$pass = $row_Recordset3['password'];

$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}

if ((isset($_POST["MM_update"])) && ($_POST["MM_update"] == "form1")) {
  $updateSQL = sprintf("UPDATE userinformation SET usernm=%s WHERE id='$field'",
                       GetSQLValueString($_POST['textfield'], "text"));

  mysql_select_db($database_elvisdb, $elvisdb);
  $Result1 = mysql_query($updateSQL, $elvisdb) or die(mysql_error());

// *** Validate request to login to this site.
if (!isset($_SESSION)) {
  session_start();
}

$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
  $_SESSION['PrevUrl'] = $_GET['accesscheck'];
}

if (isset($_POST['textfield'])) {
  $loginUsername=$_POST['textfield'];
  $password=$_POST['hiddenField'];
  $MM_fldUserAuthorization = "";
  $MM_redirectLoginSuccess = "logdonuserpagenew.php";
  $MM_redirectLoginFailed = "logdonuserpagenew.php";
  $MM_redirecttoReferrer = false;
  mysql_select_db($database_elvisdb, $elvisdb);
  
  $LoginRS__query=sprintf("SELECT usernm, password FROM userinformation WHERE usernm=%s AND password=%s",
    GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text")); 
   
  $LoginRS = mysql_query($LoginRS__query, $elvisdb) or die(mysql_error());
  $loginFoundUser = mysql_num_rows($LoginRS);
  if ($loginFoundUser) {
     $loginStrGroup = "";
    
    //declare two session variables and assign them
    $_SESSION['MM_Username'] = $loginUsername;
    $_SESSION['MM_UserGroup'] = $loginStrGroup;	      

  header("Location: logdonuserpagenew.php");
  }
}
}

[Lumio]

If one error raised you can't set the header anymore. To use header() you can't output anything.

so:

<?php
header('foo:bar'); // you new header
echo 'something'; // output something.
?>

[garydt]

Thanks.

 

I've got a header location command at line 87, im not outputting anything to the screen before that so i can't see why i'm getting modifying header error.

[Lumio]

what is in line 87?

[GingerRobot]

You say you're not outputting anything to the screen, but two things: firstly, did you check through your included files to make sure they dont ouput anything. Second, dont forget about whitespace. The blank line at the top of the code you posted looks to me like it could be some whitespace - perhaps a newline character. You'll need to remove that too.

[teng84]

tips bro:

i think the error is that the declaration of session that should always be at the top of every page

see this thing :

<?php require_once('Connections/elvisdb.php'); ?>

<?php

session_start();

?>

thats what your trying to do

i suggest try doing like this

 

<?php

session_start();

require_once('Connections/elvisdb.php');

?>

if theres is no printing action on any part cause i dont want to read your whole codes

that should work

note: no space on the top <?php