string(40) "chaoyang-sxsydlcljsdjyxgs.qy.qiyanku.com"

array(4) {
  [0] => string(25) "chaoyang-sxsydlcljsdjyxgs"
  [1] => string(2) "qy"
  [2] => string(7) "qiyanku"
  [3] => string(3) "com"
}

int(2)