guzzle_example.module

<?php

/**
 * Implements hook_block_view().
 */
function guzzle_example_block_view($delta = '') {
  $block = array();
  $example = GuzzleExample::create();
  switch ($delta) {
    case 'host_ip':
      $block['subject'] = t('Host IP Address');
      $block['content'] = guzzle_example_get_host_ip();
      break;
  }
  return $block;
}