gistfile1.txt

<?php
/* @file
 * provides custom blocks
 */

function n101_blocks_block_info() {
  $blocks = array();
  $blocks['custom1'] = array(
          'info'=> t('Custom block 1')
  );
  $blocks['custom2'] = array(
          'info'=> t('Custom block 2')
  );
  return $blocks;
}

function n101_blocks_block_view($delta) {
  $blocks = array();
  switch($delta) {
    case 'custom1':
      $blocks['subject'] = t('Custom Block One');
      $blocks['content'] = t('This is our block content');
    break;
    case 'custom2':
      $blocks['subject'] = t('Custom Block Two');
      $blocks['content'] = custom_block2();
    break;
    }
  return $blocks;
}

function custom_block2() {
  return "This is custom block 2";
}