string(35) "tianjin-cdymfmyyxgs.qiye.hbksco.com"

array(4) {
  [0] => string(19) "tianjin-cdymfmyyxgs"
  [1] => string(4) "qiye"
  [2] => string(6) "hbksco"
  [3] => string(3) "com"
}

array(2) {
  [0] => string(7) "tianjin"
  [1] => string(11) "cdymfmyyxgs"
}

int(2)