string(33) "luzhou-zgsxyzsyxgs.qy.qiyanku.com"

array(4) {
  [0] => string(18) "luzhou-zgsxyzsyxgs"
  [1] => string(2) "qy"
  [2] => string(7) "qiyanku"
  [3] => string(3) "com"
}

array(2) {
  [0] => string(6) "luzhou"
  [1] => string(11) "zgsxyzsyxgs"
}

int(6)

int(2)