城市查询列表

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application/api/server/CityService.php

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+<?php
+
+namespace app\api\server;
+
+use think\Db;
+use think\facade\Cache;
+use think\facade\Config;
+
+class CityService
+{
+    public function list()
+    {
+        $cacheKey = 'city_cache_keys';
+        if (Cache::store('redis')->has($cacheKey)) {
+            return Cache::store('redis')->get($cacheKey);
+        }
+        //查询市级名称
+        $data = Db::name('dev_region')
+            ->order('id', 'asc')
+            ->field('id,parent_id,name')
+            ->where('level',1)
+            ->select();
+        if ($data) {
+            Cache::store('redis')->set($cacheKey, $data);
+        }
+        return $data;
+    }
+}