troubleshooting Question

Cannot modify header information - headers already sent by

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theprankstanator asked on
19 Comments1 Solution126984 ViewsLast Modified:
Hi All,

I have a few scripts whereby once a form is submitted (and info uploaded and stored in the db), it redirects to another page.

The problem is, that once I uploaded it to my clients server, I get this error;

Warning: Cannot modify header information - headers already sent by (output started at /path/to/mainframe_distributors_add.php:19) in /path/to/add_dist.php on line 79

Now, I know that header() must be before any output, but the site is in frames and I need the code where it is, it also worked fine on my Linux server.

I trie ob_start() - but that caused more errors than it fixed....

Anyway, heres my code;

  $insertGoTo = "mainframe_distributors_thanks.php";
  if (isset($_SERVER['QUERY_STRING'])) {
    $insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
    $insertGoTo .= $_SERVER['QUERY_STRING'];
  header(sprintf("Location: %s", $insertGoTo));

Thanks for any help.

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