Drupal 7 Template Suggestions

<?php

//template.php
// Add a single suggestion for nodes that have the "Promoted to front page" box checked.
function drop_preprocess_node(&$variables) {
  if ($variables['promote']) {
    // looks for node--promoted.tpl.php in your theme directory
    $variables['theme_hook_suggestion'] = 'node__promoted';
  }
}

// Add multiple suggestions for pages based on the logged in user's roles.
function drop_preprocess_page(&$variables) {
  global $user;
 
  if (!empty($user->roles)) {
    foreach ($user->roles as $role) {
      $filter = '![^abcdefghijklmnopqrstuvwxyz0-9-_]+!s';
      $string_clean = preg_replace($filter, '-', drupal_strtolower($role));

      // looks for page--[role].tpl.php in your theme directory
      // ex: page--administrator.tpl.php
      $variables['theme_hook_suggestions'][] =  'page__'. $string_clean;
    }
  }
}
?>