json_encode 索引为数字，自动排序问题

使用son_encode 给前端返回数据，结果顺序不对，经debug调试，发现是json_encode 函数的问题；

{ "code": 0, "msg": "请求成功!", "data": { "2018-10": { "17": [ { "id": 730, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "长春燃气", "stock_code": "600333", "in_timed_at": 1539756681, "price": "6.4" } ], "18": [ { "id": 735, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "天孚通信", "stock_code": "300394", "in_timed_at": 1539828137, "price": "17.7" } ], "19": [ { "id": 748, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "科大讯飞", "stock_code": "002230", "in_timed_at": 1539941525, "price": "31.87" } ], "09": [ { "id": 706, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "温州宏丰", "stock_code": "300283", "in_timed_at": 1539048922, "price": "4.83" } ] }, "2018-09": { "29": [ { "id": 702, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "新美星", "stock_code": "300509", "in_timed_at": 1538212392, "price": "13.36" } ] } }}

解决办法：在数字索引前加个空格。如“ 19” “ 18”完美解决问题。

解决方法：变成 " " + 数字即可，例如：" 18", " 19"

{ "code": 0, "msg": "请求成功!", "data": { "2018-10": { " 19": [ { "id": 748, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "科大讯飞", "stock_code": "002230", "in_timed_at": 1539941525, "price": "31.87" } ], " 18": [ { "id": 735, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "天孚通信", "stock_code": "300394", "in_timed_at": 1539828137, "price": "17.7" } ], " 17": [ { "id": 730, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "长春燃气", "stock_code": "600333", "in_timed_at": 1539756681, "price": "6.4" } ], " 09": [ { "id": 706, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "温州宏丰", "stock_code": "300283", "in_timed_at": 1539048922, "price": "4.83" } ] }, "2018-09": { " 29": [ { "id": 702, "uid": "118209", "is_read": false, "biggest_high": 0, "first_read_at": "", "stock_name": "新美星", "stock_code": "300509", "in_timed_at": 1538212392, "price": "13.36" } ] } }}

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