[Fatal Error] - [Urgent]

// Replace offensive words with the defined replacement word
function censorwords($text) {
   global $settings;
   if ($settings['bad_words_enabled'] == "1" && $settings['bad_words'] != "" ) {
      $word_list = explode("\r\n", $settings['bad_words']);
      for ($i=0;$i < count($word_list);$i++) {
         if ($word_list[$i] != "") $text = preg_replace("/".safe_preg($word_list[$i])."/si", $settings['bad_word_replace'], $text);
      }
   }
   return $text;
}

function safe_preg($content) {
   $search  = array('\\\\', '^', '$', '.', '[', ']', '|', '(', ')', '?', '*', '+', '{', '}');
   $replace = array('\\\\\\\\', '\\^', '\\$', '\\.', '\\[', '\\]', '\\|', '\\(', '\\)', '\\?', '\\*', '\\+', '\\{', '\\}');
   return str_replace($search, $replace, $content);
}