关于php：catchable致命错误：Object of class stdClass could not be converted to string

Catchable fatal error: Object of class stdClass could not be converted to string

问题在于：echo $village_id."-" .$wg_village;它返回：

Catchable fatal error: Object of class stdClass could not be converted to string in /files/function_20.php on line 70

在第70行，我发布了代码，函数运行得很好，只返回一个带有错误的空白页。

那条线怎么了？我该怎么纠正呢？

编辑：a var_dump$village_id和$wg_village：

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string(5)"80784"
object(stdClass)#25 (35) {
["id"]=> string(5)"80784"
["name"]=> string(7)"NewName"
["x"]=> string(3)"-99"
["y"]=> string(3)"-14"
["kind_id"]=> string(1)"5"
["user_id"]=> string(1)"1"
["rs1"]=> int(36000) ["rs2"]=> int(36000)
["rs3"]=> int(36000) ["rs4"]=> int(36000)
["workers"]=> string(2)"51"
["troop_keep"]=> string(1)"0"
["time_update_rs1"]=> string(19)"2014-05-09 01:45:30"
["time_update_rs2"]=> string(19)"2014-05-09 01:45:30"
["time_update_rs3"]=> string(19)"2014-05-09 01:45:30"
["time_update_rs4"]=> string(19)"2014-05-09 01:45:30"
["nation_id"]=> string(1)"2" ["merchant_underaway"]=> string(1)"0"
["child_id"]=> string(0)"" ["cp"]=> string(3)"104"
["cpupdate_time"]=> string(19)"2014-05-08 21:49:55"
["krs1"]=> string(1)"1"
["krs2"]=> string(1)"1"
["krs3"]=> string(1)"1"
["krs4"]=> string(1)"1"
["faith"]=> string(1)"3"
["faith_time"]=> string(19)"2014-05-07 22:05:44"
["dateCreate_vila"]=> string(19)"2014-05-05 20:38:26"
["capa123"]=> int(36000)
["capa4"]=> int(36000)
["speedIncreaseRS1"]=> float(1000)
["speedIncreaseRS2"]=> float(600)
["speedIncreaseRS3"]=> float(800)
["speedIncreaseRS4"]=> float(1200)
["speedIncreaseRS4Real"]=> float(1149)
}