How to redirect a user to a destination after login

This is how you can redirect a user to a destination after login

<?php
function mymodule_user($op, &$edit, &$account, $category = NULL) {

  if ($op == 'login') {
    $_REQUEST['destination'] = "mymodule/some/path";
  }
}
?>

Operations:

  • after_update: The user object has been updated and changed. Use this
    (probably along with 'insert') if you want to reuse some information from
    the user object.
  • categories: A set of user information categories is requested.
  • delete: The user account is being deleted. The module should remove its
    custom additions to the user object from the database.
  • form: The user account edit form is about to be displayed. The module
    should present the form elements it wishes to inject into the form.
  • insert: The user account is being added. The module should save its
    custom additions to the user object into the database and set the saved
    fields to NULL in $edit.
  • load: The user account is being loaded. The module may respond to this
    and insert additional information into the user object.
  • login: The user just logged in.
  • logout: The user just logged out.
  • register: The user account registration form is about to be displayed.
    The module should present the form elements it wishes to inject into the
    form.
  • submit: Modify the account before it gets saved.
  • update: The user account is being changed. The module should save its
    custom additions to the user object into the database and set the saved
    fields to NULL in $edit.
  • validate: The user account is about to be modified. The module should
    validate its custom additions to the user object, registering errors as
    necessary.
  • view: The user's account information is being displayed. The module
    should format its custom additions for display, and add them to the
    $account->content array.

More info:http://api.drupal.org/api/drupal/developer!hooks!core.php/function/hook_...

...and there is a module for that:http://drupal.org/project/login_destination

Knowledge keywords: 
Drupal 6.x
redirect
login