string(36) "aba-cdhycwxsjybgrdz.sy.niaoshifu.com"

array(4) {
  [0] => string(19) "aba-cdhycwxsjybgrdz"
  [1] => string(2) "sy"
  [2] => string(9) "niaoshifu"
  [3] => string(3) "com"
}

array(2) {
  [0] => string(3) "aba"
  [1] => string(15) "cdhycwxsjybgrdz"
}