PHP wkcache函数代码示例

    /**
     * 获取自营店铺的ID
     *
     * @param boolean $bind_all_gc = false 是否只获取绑定全部类目的自营店 默认否（即全部自营店）
     * @return array
     */
    public function getOwnShopIds($bind_all_gc = false) {

        $data = $this->ownShopIds;

        // 属性为空则取缓存
        if (!$data) {
            $data = rkcache('own_shop_ids');

            // 缓存为空则查库
            if (!$data) {
                $data = array();
                $all_own_shops = $this->table('store')->field('store_id,bind_all_gc')->where(array(
                    'is_own_shop' => 1,
                ))->select();
                foreach ((array) $all_own_shops as $v) {
                    $data[$v['store_id']] = (int) (bool) $v['bind_all_gc'];
                }

                // 写入缓存
                wkcache('own_shop_ids', $data);
            }

            // 写入属性
            $this->ownShopIds = $data;
        }

        return array_keys($bind_all_gc ? array_filter($data) : $data);
    }

 /**
  * 获取微信access_token
  */
 private function _get_wx_access_token()
 {
     // 尝试读取缓存的access_token
     $access_token = rkcache('wx_access_token');
     if ($access_token) {
         $access_token = unserialize($access_token);
         // 如果access_token未过期直接返回缓存的access_token
         if ($access_token['time'] > TIMESTAMP) {
             return $access_token['token'];
         }
     }
     $url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s';
     $url = sprintf($url, $this->payment_config['wxpay_appid'], $this->payment_config['wxpay_appsecret']);
     $re = http_get($url);
     $result = json_decode($re, true);
     if ($result['errcode']) {
         return '';
     }
     // 缓存获取的access_token
     $access_token = array();
     $access_token['token'] = $result['access_token'];
     $access_token['time'] = TIMESTAMP + $result['expires_in'];
     wkcache('wx_access_token', serialize($access_token));
     return $result['access_token'];
 }

 protected function article()
 {
     if (C('cache_open')) {
         if ($article = rkcache("index/article")) {
             Tpl::output('show_article', $article['show_article']);
             Tpl::output('article_list', $article['article_list']);
             return;
         }
     } else {
         if (file_exists(BASE_DATA_PATH . '/cache/index/article.php')) {
             include BASE_DATA_PATH . '/cache/index/article.php';
             Tpl::output('show_article', $show_article);
             Tpl::output('article_list', $article_list);
             return;
         }
     }
     $model_article_class = Model('article_class');
     $model_article = Model('article');
     $show_article = array();
     //商城公告
     $article_list = array();
     //下方文章
     $notice_class = array('notice');
     $code_array = array('member', 'store', 'payment', 'sold', 'service', 'about');
     $notice_limit = 5;
     $faq_limit = 5;
     $class_condition = array();
     $class_condition['home_index'] = 'home_index';
     $class_condition['order'] = 'ac_sort asc';
     $article_class = $model_article_class->getClassList($class_condition);
     $class_list = array();
     if (!empty($article_class) && is_array($article_class)) {
         foreach ($article_class as $key => $val) {
             $ac_code = $val['ac_code'];
             $ac_id = $val['ac_id'];
             $val['list'] = array();
             //文章
             $class_list[$ac_id] = $val;
         }
     }
     $condition = array();
     $condition['article_show'] = '1';
     $condition['home_index'] = 'home_index';
     $condition['field'] = 'article.article_id,article.ac_id,article.article_url,article.article_title,article.article_time,article_class.ac_name,article_class.ac_parent_id';
     $condition['order'] = 'article_sort asc,article_time desc';
     $condition['limit'] = '300';
     $article_array = $model_article->getJoinList($condition);
     if (!empty($article_array) && is_array($article_array)) {
         foreach ($article_array as $key => $val) {
             $ac_id = $val['ac_id'];
             $ac_parent_id = $val['ac_parent_id'];
             if ($ac_parent_id == 0) {
                 //顶级分类
                 $class_list[$ac_id]['list'][] = $val;
             } else {
                 $class_list[$ac_parent_id]['list'][] = $val;
             }
         }
     }
     if (!empty($class_list) && is_array($class_list)) {
         foreach ($class_list as $key => $val) {
             $ac_code = $val['ac_code'];
             if (in_array($ac_code, $notice_class)) {
                 $list = $val['list'];
                 array_splice($list, $notice_limit);
                 $val['list'] = $list;
                 $show_article[$ac_code] = $val;
             }
             if (in_array($ac_code, $code_array)) {
                 $list = $val['list'];
                 $val['class']['ac_name'] = $val['ac_name'];
                 array_splice($list, $faq_limit);
                 $val['list'] = $list;
                 $article_list[] = $val;
             }
         }
     }
     if (C('cache_open')) {
         wkcache('index/article', array('show_article' => $show_article, 'article_list' => $article_list));
     } else {
         $string = "<?php\n\$show_article=" . var_export($show_article, true) . ";\n";
         $string .= "\$article_list=" . var_export($article_list, true) . ";\n?>";
         file_put_contents(BASE_DATA_PATH . '/cache/index/article.php', $string);
     }
     Tpl::output('show_article', $show_article);
     Tpl::output('article_list', $article_list);
 }

 /**
  * 获取缓存
  *
  * @param string $key 缓存键
  * @return array 缓存数据
  */
 protected function getCachedData($key)
 {
     $data = $this->cachedData[$key];
     // 属性中存在则返回
     if ($data || is_array($data)) {
         return $data;
     }
     $data = rkcache($key);
     // 缓存中存在则返回
     if ($data || is_array($data)) {
         // 写入属性
         $this->cachedData[$key] = $data;
         return $data;
     }
     $data = $this->getCachingDataByQuery($key);
     // 写入缓存
     wkcache($key, $data);
     // 写入属性
     $this->cachedData[$key] = $data;
     return $data;
 }

/**
 * KV缓存 读
 *
 * @param string $key 缓存名称
 * @param boolean $callback 缓存读取失败时是否使用回调 true代表使用cache.model中预定义的缓存项 默认不使用回调
 * @param callable $callback 传递非boolean值时 通过is_callable进行判断 失败抛出异常 成功则将$key作为参数进行回调
 * @return mixed
 */
function rkcache($key, $callback = false)
{
    if (C('cache_open')) {
        $cacher = Cache::getInstance('cacheredis');
    } else {
        $cacher = Cache::getInstance('file', null);
    }
    if (!$cacher) {
        throw new Exception('Cannot fetch cache object!');
    }
    $value = $cacher->get($key);
    if ($value === false && $callback !== false) {
        if ($callback === true) {
            $callback = array(Model('cache'), 'call');
        }
        if (!is_callable($callback)) {
            throw new Exception('Invalid rkcache callback!');
        }
        $value = call_user_func($callback, $key);
        wkcache($key, $value);
    }
    return $value;
}

 /**
  * 前台头部的商品分类
  *
  * @param   number  $update_all   更新
  * @return  array   数组
  */
 public function get_all_category($update_all = 0)
 {
     // 不存在时更新或者强制更新时执行
     if ($update_all == 1 || !($gc_list = rkcache('all_categories'))) {
         $class_list = $this->getGoodsClassListAll();
         $gc_list = array();
         $class1_deep = array();
         //第1级关联第3级数组
         $class2_ids = array();
         //第2级关联第1级ID数组
         $type_ids = array();
         //第2级分类关联类型
         if (is_array($class_list) && !empty($class_list)) {
             foreach ($class_list as $key => $value) {
                 $p_id = $value['gc_parent_id'];
                 //父级ID
                 $gc_id = $value['gc_id'];
                 $sort = $value['gc_sort'];
                 if ($p_id == 0) {
                     //第1级分类
                     $gc_list[$gc_id] = $value;
                 } elseif (array_key_exists($p_id, $gc_list)) {
                     //第2级
                     $class2_ids[$gc_id] = $p_id;
                     $type_ids[] = $value['type_id'];
                     $gc_list[$p_id]['class2'][$gc_id] = $value;
                 } elseif (array_key_exists($p_id, $class2_ids)) {
                     //第3级
                     $parent_id = $class2_ids[$p_id];
                     //取第1级ID
                     $gc_list[$parent_id]['class2'][$p_id]['class3'][$gc_id] = $value;
                     $class1_deep[$parent_id][$sort][] = $value;
                 }
             }
             $type_brands = $this->get_type_brands($type_ids);
             //类型关联品牌
             foreach ($gc_list as $key => $value) {
                 $gc_id = $value['gc_id'];
                 $pic_name = BASE_UPLOAD_PATH . '/' . ATTACH_COMMON . '/category-pic-' . $gc_id . '.jpg';
                 if (file_exists($pic_name)) {
                     $gc_list[$gc_id]['pic'] = UPLOAD_SITE_URL . '/' . ATTACH_COMMON . '/category-pic-' . $gc_id . '.jpg';
                 }
                 $class3s = $class1_deep[$gc_id];
                 if (is_array($class3s) && !empty($class3s)) {
                     //取关联的第3级
                     $class3_n = 0;
                     //已经找到的第3级分类个数
                     ksort($class3s);
                     //排序取到分类
                     foreach ($class3s as $k3 => $v3) {
                         if ($class3_n >= 5) {
                             //最多取5个
                             break;
                         }
                         foreach ($v3 as $k => $v) {
                             if ($class3_n >= 5) {
                                 break;
                             }
                             if (is_array($v) && !empty($v)) {
                                 $p_id = $v['gc_parent_id'];
                                 $gc_id = $v['gc_id'];
                                 $parent_id = $class2_ids[$p_id];
                                 //取第1级ID
                                 $gc_list[$parent_id]['class3'][$gc_id] = $v;
                                 $class3_n += 1;
                             }
                         }
                     }
                 }
                 $class2s = $value['class2'];
                 if (is_array($class2s) && !empty($class2s)) {
                     //第2级关联品牌
                     foreach ($class2s as $k2 => $v2) {
                         $p_id = $v2['gc_parent_id'];
                         $gc_id = $v2['gc_id'];
                         $type_id = $v2['type_id'];
                         $gc_list[$p_id]['class2'][$gc_id]['brands'] = $type_brands[$type_id];
                     }
                 }
             }
         }
         wkcache('all_categories', $gc_list);
     }
     return $gc_list;
 }

 /**
  * 广告
  *
  * @return array
  */
 public function makeApAllCache()
 {
     if (C('cache_open')) {
         // *kcache() doesnt support iterating on keys
     } else {
         delCacheFile('adv');
     }
     $model = Model();
     $ap_list = $model->table('adv_position')->where(array('is_use' => 1))->select();
     $adv_list = $model->table('adv')->where(array('adv_end_date' => array('gt', time())))->order('slide_sort, adv_id desc')->select();
     $array = array();
     foreach ((array) $ap_list as $v) {
         foreach ((array) $adv_list as $xv) {
             if ($v['ap_id'] == $xv['ap_id']) {
                 $v['adv_list'][] = $xv;
             }
         }
         // 写入缓存
         $apId = (int) $v['ap_id'];
         if (C('cache_open')) {
             wkcache("adv/{$apId}", $v);
         } else {
             write_file(BASE_DATA_PATH . '/cache/adv/' . $apId . '.php', $v);
         }
     }
 }

 private function _getAllArea()
 {
     $data = array();
     $area_all_array = $this->limit(false)->select();
     foreach ((array) $area_all_array as $a) {
         $data['name'][$a['area_id']] = $a['area_name'];
         $data['parent'][$a['area_id']] = $a['area_parent_id'];
         $data['children'][$a['area_parent_id']][] = $a['area_id'];
         if ($a['area_deep'] == 1 && $a['area_region']) {
             $data['region'][$a['area_region']][] = $a['area_id'];
         }
     }
     wkcache('area', $data);
     $this->cachedData = $data;
     return $data;
 }

 /**
  * 获取地区数组 格式如下
  * array(
  *   'name' => array(
  *     '地区id' => '地区名称',
  *     // ..
  *   ),
  *   'parent' => array(
  *     '子地区id' => '父地区id',
  *     // ..
  *   ),
  *   'children' => array(
  *     '父地区id' => array(
  *       '子地区id 1',
  *       '子地区id 2',
  *       // ..
  *     ),
  *     // ..
  *   ),
  *   'region' => array(array(
  *     '华北区' => array(
  *       '省级id 1',
  *       '省级id 2',
  *       // ..
  *     ),
  *     // ..
  *   ),
  * )
  *
  * @return array
  */
 protected function getCache()
 {
     // 对象属性中有数据则返回
     if ($this->cachedData !== null) {
         return $this->cachedData;
     }
     // 缓存中有数据则返回
     if ($data = rkcache('area')) {
         $this->cachedData = $data;
         return $data;
     }
     // 查库
     $data = array();
     $area_all_array = $this->limit(false)->select();
     foreach ((array) $area_all_array as $a) {
         $data['name'][$a['area_id']] = $a['area_name'];
         $data['parent'][$a['area_id']] = $a['area_parent_id'];
         $data['children'][$a['area_parent_id']][] = $a['area_id'];
         if ($a['area_deep'] == 1 && $a['area_region']) {
             $data['region'][$a['area_region']][] = $a['area_id'];
         }
     }
     wkcache('area', $data);
     $this->cachedData = $data;
     return $data;
 }