<?php

/**
 * Override internal engine settings or append some of our own.
 */
function _phptemplate_variables($hook, $vars = array()) {
  global $user;

  switch ($hook) {
    case 'page':
      if (arg(0) == 'user') {
        $vars['template_file'] = 
          in_array('cnu member', $user->roles)
            ? 'page-user_by_member.tpl.php'
            : 'page-user_by_nonmember.tpl.php';
      } break;
  }

  return $vars;
}