如当页面前环境变量为：

{
    "page": 1,
    "id": 2,
    "channel_id": 2,
    "cid": 2,
    "parent_id": 0,
    "pid": 0,
    "channel_ids": "",
    "children_ids": "",
    "extend_ids": "",
    "channel": {
        "id": 2,
        "name": "彩票",
        "full_name": "彩票",
        "parent_id": 0,
        "logo": "/uploads/images/202506/22/fileb223f55b671919119a4541e3babf42f74871.jpg",
        "type": 1,
        "link": "",
        "deep": 1,
        "path": ",0,",
        "model_ids": "1",
        "channel_path": "c[id]",
        "content_path": "a[id]",
        "extend_ids": "",
        "description": "",
        "keywords": "",
        "is_show": 1,
        "is_navi": 1,
        "sort": 1004,
        "order_by": "",
        "pagesize": 12,
        "create_time": "2025-07-11 16:22:02",
        "update_time": "2025-07-11 16:22:02",
        "delete_time": null,
        "__not_found__": false,
        "channel_id": 2,
        "url": "channel/c2.html",
        "children_ids": []
    },
    "page_title": "彩票_",
    "page_description": "彩票",
    "page_keywords": "彩票",
    "__site_home__": "/",
    "__page_type__": "channel",
    "__set_pagesize__": 12,
    "__set_order_by__": "is_top desc,",
    "__set_page_path__": "/channel/c2-[PAGE].html",
    "__wconf__": {
        "name": "Tpext CMS系统",
        "keywords": "Tpext CMS系统,cms,内容管理系统,thinkphp,php",
        "description": "Tpext CMS系统",
        "copyright": "Copyright © 2025. Tpext CMS系统 All rights reserved.",
        "assets_ver": "1.0",
        "use_layout": 1,
        "make_static": 0
    }
}