Club Drupal

<?php

/**

 * Context plugin that can extract arbitrary values from the query string.

 */

    '#title' => t('Query string key'),

    '#description' => t('Enter the key of the value that must be returned from the query string.'),

    '#type' => 'textfield',

  );

  if (isset($form_state['conf']['key'])) {

    $form['key']['#default_value'] = $form_state['conf']['key'];

  switch ($type) {

    case 'raw':

      return $context->data;

    case 'html_safe':

      return check_plain($context->data);

  }