【www.gdgbn.com--计数转换】

function d_htmlspecialchars($string) {
 if(is_array($string)) {
  foreach($string as $key => $val) {
   $string[$key] = d_htmlspecialchars($val);
  }
 } else {
  $string = str_replace("&", "&", $string);
  $string = str_replace(""", """, $string);
  $string = str_replace(""", "'", $string);
  $string = str_replace("<", "<", $string);
  $string = str_replace(">", ">", $string);
  $string = preg_replace("/&(#d;)/", "&1", $string);
 }
 return $string;
}

本文来源：http://www.gdgbn.com/wangyetexiao/28187/