string(41) "nanjing-tzsjyzhcbsbc.brand.gongxuqiao.com"

array(4) {
  [0] => string(20) "nanjing-tzsjyzhcbsbc"
  [1] => string(5) "brand"
  [2] => string(10) "gongxuqiao"
  [3] => string(3) "com"
}

array(2) {
  [0] => string(7) "nanjing"
  [1] => string(12) "tzsjyzhcbsbc"
}

int(7)

int(2)