array(18) {
  ["a"] => int(0)
  ["b"] => string(2) "sh"
  ["c"] => string(8) "shanghai"
  ["d"] => string(5) "luwan"
  ["e"] => string(1) "3"
  ["g"] => int(0)
  ["h"] => int(0)
  ["s"] => int(0)
  ["k"] => string(0) ""
  ["n"] => int(0)
  ["o"] => int(0)
  ["p"] => int(0)
  ["q"] => int(0)
  ["r"] => int(0)
  ["t"] => int(0)
  ["area_id"] => int(2711)
  ["city_id"] => int(321)
  ["province_id"] => int(25)
}
bool(false)
string(22) "  and p.cid = 3       "