## 等级是否存在查询 ~~~ call('town.home.basic.level.exists', [[$level=>1]]) ~~~ ~~~[api] post:town.home.basic.level.exists *level=0#等级 <<< success Array ( [result] => 0 ) <<< error Array ( [error] => Array ( [code] => -32602 [message] => Invalid params [data] => ) ) ~~~