Custom PHP Truncate Function

/*-------------------------------------------------------------------------------
    Truncate Function For Excerpts
-------------------------------------------------------------------------------*/
function trunc($phrase, $max_words) {
   $phrase_array = explode(' ',$phrase);
   if(count($phrase_array) > $max_words && $max_words > 0) {
      $phrase = implode(' ',array_slice($phrase_array, 0, $max_words)).' … ';
   }
   return $phrase;
}


  // Original PHP code by Chirp Internet: www.chirp.com.au
  // Please acknowledge use of this code by including this header.

function restoreTags($input)
{
  $opened = array();

  // loop through opened and closed tags in order
  if(preg_match_all("/<(\/?[a-z]+)>?/i", $input, $matches)) {
    foreach($matches[1] as $tag) {
      if(preg_match("/^[a-z]+$/i", $tag, $regs)) {
        // a tag has been opened
        if(strtolower($regs[0]) != 'br') $opened[] = $regs[0];
      } elseif(preg_match("/^\/([a-z]+)$/i", $tag, $regs)) {
        // a tag has been closed
        unset($opened[array_pop(array_keys($opened, $regs[1]))]);
      }
    }
  }

  // close tags that are still open
  if($opened) {
    $tagstoclose = array_reverse($opened);
    foreach($tagstoclose as $tag) $input .= "</$tag>";
  }

  return $input;
}