Custom Block code for Drupal 7

MODULE_NAME.module

<?php

/**
 * Implements hook_block_info().
 */
function MODULE_NAME_block_info() {
  $blocks['BLOCK_DELTA'] = array(
    'info' => t(''),
    'cache' => DRUPAL_NO_CACHE,
  );
  return $blocks;
}

/**
 * Implements hook_block_view().
 */
function MODULE_NAME_block_view($delta = '') {
  $block = array();
  switch ($delta) {
    case 'BLOCK_DELTA':
      $block['subject'] = t('');
      $block['content'] = '';
      break;
  }
  return $block;
}