Get uid of logged user

I use $user->uid in my custom profile page to create the custom profile page for each user.

when I want to get the uid of person who has written a node I use

	$ka->uid = $node->uid;
	profile_load_profile($ka);

When I want to get he person who is logged in I use:

global $user;   and $user->uid ;

I suppose you after the last one.

Harjoituspäiväkirja - www.lenkkivihko.fi

Most people override theme_user_profile something like this

<?php
/**
* Catch the theme_profile_profile function, and redirect through the template api
*/
function phptemplate_user_profile($user, $fields = array()) {
  // Pass to phptemplate, including translating the parameters to an associative array. The element names are the names that the variables
  // will be assigned within your template.
  /* potential need for other code to extract field info */
return _phptemplate_callback('user_profile', array('user' => $user, 'fields' => $fields));
  }
?>

and the part that reads 'user' => $user makes the variable $user available as $user in user_profile_tpl.php which means the global $user is hidden. If you need both change 'user' => $user to 'account' => $user, then in user_profile.tpl.php change all uses of $user to $account. Then you can declare $user as global and reference data about the person logged in (using $user).

In profile page, you can use $user->uid directly. And in other pages, $user is defined as a global variable. This post explains how to get user id in drupal: drupal get user id