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<?php
add_action('peepso_action_user_activate', 'hook', 10, 1);
 
/*
* Send an email to admin each time a new group is created
*/
hook(PeepSoUser $PeepSoUser) {
    $msg = "New user {$PeepSoUser->get_fullname()} ID {$PeepSoUser->get_id()}"; 
    error_log($msg);
}