I am working on my own form module for Drupal 7.

I tried to set some default text depending on a cookie was set or not. It works perfectly as long as your are logged in; once you are an anonymous user, it doesn't read/write the cookie.

I tried to debug this by putting in a few calls to echo(), and drupal_set_message(), but they are only shown when I'm logged in; they don't show for anonymous users. I can't figure out why.

Can anyone help me with this?

This is the code I am using.

$serviceType = "";
$serviceName = "";
if (isset($_COOKIE["kms_hoststring_name"])) {
  $serviceName = $_COOKIE["kms_hoststring_name"];
  $serviceType = $_COOKIE["kms_hoststring_type"];
echo "TEST";
$form['serviceType'] = array(
  '#type' => 'textfield',
  '#title' => t('Service Type:'),
  '#default_value' => t($serviceType),

$form['serviceName'] = array(
  '#type' => 'textfield',
  '#title' => t('Service Name'),
  '#default_value' => t($serviceName),

//Deletes cookies after use.
echo "TEST1";
if (isset($_COOKIE["kms_hoststring_name"])){
  setcookie("kms_hoststring_name", "", time()-60000, "/");
  setcookie("kms_hoststring_type", "", time()-60000, "/");
  echo "TEST2".$_COOKIE["kms_hoststring_name"];

None of the echo() or drupal_set_message() calls output anything for anonymous users.
When I log in, I see the output of those function calls.

  • 2
    Perhaps you could add a sample of your code? It's hard to diagnose your issue without knowing what you're actually trying to do :(
    – Chapabu
    Dec 20, 2012 at 9:43
  • Added a code sample.
    – letifere
    Dec 20, 2012 at 9:59
  • What function has the code? Probably, the whole code block is executed for authenticated user only.
    – Sithu
    Dec 20, 2012 at 11:23

1 Answer 1


Drupal have much better tools for debugging than echo. You can sent a message to the watchdog log with the watchdog function. And if you install the devel module you get a few more funcions like dpm() to easily send messages or dd() to write onto the drupal debug log.

  • 2
    The devel module also needs to set correct permissions, otherwise, dpm() will output nothing for anonymous users.
    – Sithu
    Dec 20, 2012 at 11:26

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