string(34) "dayi-cdfldjdyxzrgs.qiye.hbksco.com"

array(4) {
  [0] => string(18) "dayi-cdfldjdyxzrgs"
  [1] => string(4) "qiye"
  [2] => string(6) "hbksco"
  [3] => string(3) "com"
}

array(2) {
  [0] => string(4) "dayi"
  [1] => string(13) "cdfldjdyxzrgs"
}