The user just logged in.
$edit: The array of form values submitted by the user.
$account: The user object on which the operation was just performed.
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_user_login(&$edit, $account) {
// If the user has a NULL time zone, notify them to set a time zone.
if (!$account->timezone && variable_get('configurable_timezones', 1) && variable_get('empty_timezone_message', 0)) {
drupal_set_message(t('Configure your <a href="@user-edit">account time zone setting</a>.', array(
'@user-edit' => url("user/{$account->uid}/edit", array(
'query' => drupal_get_destination(),
'fragment' => 'edit-timezone',
)),
)));
}
}