gistfile1.php

<?php

function _block_get_renderable_block($element) {
  $block = $element['#block'];
  // Don't bother to build blocks that aren't accessible.
  if ($element['#access'] = $block->access()) {
    $build = $block->build();
    if ($build) {
      if (isset($build['#title'])) {
        $element['#title'] = $build['#title'];
      }
      $element += $build;
    }
    else {
      $element = array();
    }
  }
  return $element;
}