code you hidden element like this:
<input type="hidden" name="env_report" value="REMOTE_HOST: <?php echo((isset($_SERVER["REMOTE_HOST"]))?$_SERVER["REMOTE_HOST"]:"") ?>,HTTP_USER_AGENT: <?php echo((isset($_SERVER["HTTP_USER_AGENT"]))?$_SERVER["HTTP_USER_AGENT"]:"") ?>,REMOTE_ADDR: <?php echo((isset($_SERVER["REMOTE_ADDR"]))?$_SERVER["REMOTE_ADDR"]:"") ?>,HTT P_REFERER: <?php echo((isset($_SERVER["HTTP_REFERER"]))?$_SERVER["HTTP_REFERER"]:"") ?>,DOCUMENT_ROOT: <?php echo((isset($_SERVER["DOCUMENT_ROOT"]))?$_SERVER["DOCUMENT_ROOT"]:"") ?>,SERVER_NAME: <?php echo((isset($_SERVER["SERVER_NAME"]))?$_SERVER["SERVER_NAME"]:"") ?>">