if($highlight) {
// Add a span around all key words from the search term as well
if($stringPieces) foreach($stringPieces as $stringPiece) {
$summary = str_ireplace($stringPiece, "<span class=\"highlight\">$stringPiece</span>", $summary);

function MyContextSummary($characters = 500, $string = false, $striphtml = true, $highlight = true)
      {

   if(!$string) $string = $_REQUEST['Search']; // Use the default "Search" request variable (from SearchForm)

      /*** Prepare Content ***/

      // Replace <br /> in order to get separate words

      $content = str_replace('<br />', ' ', $this->Content);

      // Decoding entities prevents XML validation error

      $content = html_entity_decode($content, ENT_COMPAT , 'UTF-8');

      // Remove HTML tags so we don't have to deal with matching tags

      $text = strip_tags($content);

      // Remove BBCode

      $pattern = '|[[\/\!]*?[^\[\]]*?]|si';

      $replace = '';

      $text = preg_replace($pattern, $replace, $text);

      // Find the search string

      $position = (int) stripos($text, $string);

      // We want the search string to be in the middle of our block to give it some context

      $position = max(0, $position - ($characters / 2));

      // We don't want to start mid-word

      if($position > 0)
         {

      $position = max((int) strrpos(substr($text, 0, $position), ' '), (int) strrpos(substr($text, 0, $position), "\n"));

         }
         
      $summary = substr($text, $position, $characters);
      
      // We also don't want to end mid-word
      $offset = $characters+$position;
      if ($offset > strlen($text)-1) $offset = strlen($text)-1;
      $position = min((int) strpos($text, ' ', $offset), (int) strpos($text, "\n", $offset));
      if ($position) $summary = $summary.substr($text, $offset, $position-$offset);
          
   if($highlight)
      {
      // Setting the content taht will be inserted before and after the highlighted words
      $before_content = "<span class=\"highlight\">";
      $after_content = "</span>";
      
      // Save the different search values into an array
      $stringPieces = explode(' ', $string);
      
      foreach($stringPieces as $stringPiece)
         {
         //Setting the start from where $stringPiece will be searched
         $offset = 0;
         // Recursively add before_text and after_text around all found $stringPiece

            while($position = stripos($summary, $stringPiece, $offset))
               {
               $summary =
                  substr($summary, 0, $position)
                  .$before_content
                  .substr($summary, $position, strlen($stringPiece))
                  .$after_content
                  .substr($summary, $position + strlen($stringPiece), strlen($summary)-($position+1));
               
               $offset = $position + strlen($before_content) + strlen($after_content);
            }
         }
      }
      
      return trim($summary);
      }