string(37) "shaanxi-cdsgydqsbyxgs.qiye.hbksco.com"

array(4) {
  [0] => string(21) "shaanxi-cdsgydqsbyxgs"
  [1] => string(4) "qiye"
  [2] => string(6) "hbksco"
  [3] => string(3) "com"
}

array(2) {
  [0] => string(7) "shaanxi"
  [1] => string(13) "cdsgydqsbyxgs"
}