Select a specific theme by IP address (may be useful when THEMERS work collaboratively with DEV people)

Select theme by IP address

<?php

/**
 * @file helpers.module
 */

/**
 * Implements hook_custom_theme().
 * Activer le theme uniquement pour le themer (par adresse IP)
 */
function themehelpers_custom_theme() {
  if ($_SERVER['REMOTE_ADDR'] == '192.168.1.12' && arg('0') != 'admin') {
    return 'kyziah';
  }
}