string(43) "guangyuan-mysyxqqjamtsetkfzx.qy.qiyanku.com"

array(4) {
  [0] => string(28) "guangyuan-mysyxqqjamtsetkfzx"
  [1] => string(2) "qy"
  [2] => string(7) "qiyanku"
  [3] => string(3) "com"
}

array(2) {
  [0] => string(9) "guangyuan"
  [1] => string(18) "mysyxqqjamtsetkfzx"
}