Group search results by content type in Drupal 7

Source code viewer
function HOOK_preprocess_search_results(&$variables) {
  $variables['search_results'] = '';
  $resultTypes = array();
 
  // Divide results
  foreach ($variables['results'] as $result) {
    $resultTypes[$result['type']][] = $result;   
  }
 
  // Create fieldsets
  foreach ($resultTypes as $resultType => $resultTypeResults) {
    $value = '';
 
    foreach ($resultTypeResults as $result) {
      $value .= theme('search_result', array('result' => $result, 'module' => $variables['module']));
    }
 
    $variables['search_results'] .= theme('fieldset', array('element' => array('#title' => $resultType, '#value' => $value)));
  }
}
Programming Language: PHP