array(18) {
  ["a"] => int(0)
  ["b"] => string(2) "ch"
  ["c"] => string(9) "chongqing"
  ["d"] => string(7) "yunyang"
  ["e"] => string(1) "2"
  ["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(3359)
  ["city_id"] => int(394)
  ["province_id"] => int(32)
}

bool(false)

string(41) " and p.province = ch and p.cid = 2       "