Almost everywhere I search I find the following example for using dpm() or sdpm() with the Devel and the Search Krumo modules:

Paste the following code in your theme's template.php file, save, and clear cache.

function foo_form_alter(&$form, $form_state, $form_id) {
  if ($form_id == 'search_block_form') {

This is working fine.

But how can I see the other components, like Menu and its components or any block?

I tried following for menu but it is not working.

function mymodule_menu_link_alter(&$item, $menu) {

hook_menu_link_alter() accepts only one argument in Drupal 7. That's why your code isn't working.

Try the following:

function YOURMODULE_menu_link_alter(&$item) {
  if ($item['menu_name'] == 'YOUR_MENU') {

I have wrapped it in an if check, since otherwise it would run dpm for all menu links on a page and depending on the amount of links it may cause memory overflow or timeout.

  • Something looks wrong, it is not working. even I did check by removing if statement. I have enabled two menu for check i.e. main-menu and user-menu. any suggestion?
    – CodeNext
    Sep 4 '16 at 8:50
  • Did you clear the caches? is the module enabled? Sep 4 '16 at 8:54
  • Yes, I did clear cache every time.
    – CodeNext
    Sep 4 '16 at 8:55
  • I have made a correction on the if statement, $item is an array not an object. But it doesn't solve your problem that the hook isn't called. Sep 4 '16 at 9:03
  • 1
    dpm() and the likes are useful when you know exactly what you're looking for. If you want to be able to browse all variables that are available at a certain point in the code, I recommend using a debugger (like Xdebug) combined with a good IDE (like PhpStorm). Personally, I haven't touched Devel and Krumo since I got the hang of Xdebug. Sep 4 '16 at 9:11

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