array(4) {
  ["id"] => string(2) "14"
  ["name"] => string(12) "解決方案"
  ["url"] => string(10) "/solutions"
  ["pid"] => string(1) "0"
}

array(4) {
  ["id"] => string(2) "61"
  ["name"] => string(12) "戶外夜視"
  ["url"] => string(15) "/solutions?tp=7"
  ["pid"] => string(2) "14"
}

array(4) {
  ["id"] => string(3) "312"
  ["name"] => string(12) "警用執法"
  ["url"] => string(25) "/solutions/outdoor/police"
  ["pid"] => string(0) ""
}