lib/command/zset.js
function zrevrank(key, member, req) {
  var zset = this.getKey(key, req);
  if(zset === undefined) return null;
  return zset.zrevrank(member);
}
function zrevrank(key, member, req) {
  var zset = this.getKey(key, req);
  if(zset === undefined) return null;
  return zset.zrevrank(member);
}
function zrevrank ( key , member , req ) { var zset = this . getKey ( key , req ) ; if ( zset === undefined ) return null ; return zset . zrevrank ( member ) ; }
Returns the rank of member in the sorted set stored at key,
with the scores ordered from high to low.
Returns the rank of member in the sorted set stored at key with the scores ordered from high to low .