hosted_by.module

<?php
/**
 * @file
 * Code for the Hosted By module.
 */

/**
 * Implements hook_block_info().
 */
function hosted_by_block_info() {
  $blocks = array();
  $blocks['hosted-by'] = array(
    'info' => t('Hosted By (hosting provider block)'),
    'weight' => '10',
    'cache' => DRUPAL_CACHE_GLOBAL,
    'region' => 'footer',
  );  

  return $blocks;
}

/**
 * Implements hook_block_view().
 */
function hosted_by_block_view() {
  $block = array();
  $block['subject'] = NULL;

  $hosting_provider_name = variable_get('hosted_by_name', NULL);
  $hosting_provider_link = variable_get('hosted_by_link', NULL);
  $hosted_by_custom_html = variable_get('hosted_by_custom_html', NULL);

  $t_array = array(
    '!hosted_by_name' => $hosting_provider_name,
    '!hosted_by_link' => $hosting_provider_link,
  );

  $content = '<span class="hosted-by">';

  if (!empty($hosted_by_custom_html)) {
    $content .= t($hosted_by_custom_html, $t_array);
  }
  else {
    if (empty($hosting_provider_name)) { // Default block needs this
      return array();
    }

    if (empty($hosting_provider_link)) {
       $content .= t('Hosted by !hosted_by_name. !hosted_by_more', $t_array);
    }
    else { 
       $content .= t('Hosted by <a href="!hosted_by_link" class="hosted-by-link">!hosted_by_name</a>. !hosted_by_more', $t_array);
    }
  }

  $content .= '</span>';

  $block['content'] = $content;
  return $block;
}