foreach (REQUEST_POST('sel') as $id => $value) {
SQL_QUERY_ESC("UPDATE `{!_MYSQL_PREFIX!}_must_register` SET field_required='%s' WHERE `id`=%s AND field_required != '%s' LIMIT 1",
foreach (REQUEST_POST('sel') as $id => $value) {
SQL_QUERY_ESC("UPDATE `{!_MYSQL_PREFIX!}_must_register` SET field_required='%s' WHERE `id`=%s AND field_required != '%s' LIMIT 1",