Issue #3292461 by mr.york: fix php warning on preg_match_all.

    if (!empty($text)) {

      $new_value = $text;

      foreach ($this->termList as $term_id => $term_array) {

        $name = $term_array['name'];

        $name = preg_quote($term_array['name'], '/');

        preg_match_all("/$name+/i", $new_value, $matches);

        if (is_array($matches[0]) && count($matches[0]) >= 1) {

          foreach ($matches[0] as $match) {