# Code #

$params = array('submit' => 'post', 'preview' => 'preview', 'delete' => 'delete', 'poll_delete' =>
'poll_delete', 'poll_add' => 'add_poll_option', 'poll_edit' => 'edit_poll_option', 'mode' => 'mode');
while( list($var, $param) = @each($params) )
{
       if ( !empty($HTTP_POST_VARS[$param]) || !empty($HTTP_GET_VARS[$param]) )
       {
               $$var = ( !empty($HTTP_POST_VARS[$param]) ) ?
htmlspecialchars($HTTP_POST_VARS[$param]) : htmlspecialchars($HTTP_GET_VARS[$param]);
       }