public function flush_all()
 {
     if (!is_resource($this->memcache)) {
         throw new \Exception("Memcached can't connect.");
     }
     return memcache_flush($this->memcache);
 }

 public function setUp()
 {
     if ($this->mmcError) {
         return;
     }
     $this->mmc = memcache_connect('localhost', 11211);
     memcache_flush($this->mmc);
 }

 public function setUp()
 {
     if ($this->mmcError) {
         return;
     }
     if (isset($this->conf['servers'])) {
         list($this->mmhost, $this->mmport) = explode(":", $this->conf['servers']);
     }
     $mmc = memcache_connect($this->mmhost, $this->mmport);
     memcache_flush($mmc);
 }

 /**
  * 重设缓存
  */
 public function resetCache()
 {
     if ($this->config->cacheMode == 'Mysql') {
         #1.Mysql模式
         $table = $this->db->getPrefix() . self::$tableName;
         $this->db->query("TRUNCATE TABLE {$table} ");
     } else {
         #2.SAE模式
         $mc = memcache_init();
         memcache_flush($mc);
     }
     $this->request->throwJson('success');
 }

function changeCountItemsById($id, $val)
{
    $config = getConfig();
    $params = $config['memcache'];
    $table = ['name' => 'item', 'dbname' => 'db_vktest', 'as' => 'i'];
    $mysqli = db_mysqli_connect($table['dbname']);
    $queryUpdate = 'UPDATE store SET countitems = countitems + ' . intval($val) . ' WHERE idstore = ' . intval($id);
    $resultUpdate = mysqli_query($mysqli, $queryUpdate);
    db_mysqli_close($mysqli);
    $memcache = memcache_connect($params['host'], $params['port']);
    memcache_flush($memcache);
    memcache_close($memcache);
}

 /**
  * 刷新memcache的缓存，所有的项目
  * @return boolean
  */
 public function flush()
 {
     return memcache_flush($this->connection);
 }

 public static function put_feedback($employee_id, $name_of_client, $text_of_feedback, $rank_stat, $positive_sides, $negative_sides)
 {
     //положить отзыв в базу
     $db = Db::getConnection();
     $query = $db->prepare("INSERT INTO feedbacks(id, employee_id_f, cunsumer_name, feedback_publication_date, feedback_text, empl_rank, positive, negative) \n\t\t\t\t\t\t\t\tVALUES (NULL,:employee_id_f,:cunsumer_name, CURRENT_TIMESTAMP,:feedback_text,:empl_rank,:positive,:negative);");
     $query->execute(array('employee_id_f' => "{$employee_id}", 'cunsumer_name' => "{$name_of_client}", 'feedback_text' => "{$text_of_feedback}", 'empl_rank' => "{$rank_stat}", 'positive' => "{$positive_sides}", 'negative' => "{$negative_sides}"));
     $mc = memcache_connect('185.87.49.111', 11211);
     memcache_flush($mc);
     return $query;
 }

function clear_cache()
{
    memcache_flush(get_memcache_connect());
}

 public static function flush()
 {
     if (self::$conn == null) {
         self::init();
     }
     return memcache_flush(self::$conn);
 }

 static function clear()
 {
     if (self::connect()) {
         memcache_flush(CGlobal::$memcache_connect_id);
     }
     return true;
 }

function clearCache()
{
    global $memcacheServerName, $memcachePort;
    $memcache_obj = memcache_connect($memcacheServerName, $memcachePort);
    memcache_flush($memcache_obj);
}

 function flush()
 {
     return memcache_flush($this->object);
 }

 public function memFlush()
 {
     memcache_flush(self::$client);
 }

 /**
  * 刷新缓存但不释放内存空间
  *
  */
 public function flush()
 {
     memcache_flush($this->memcache);
 }

 public static function flush()
 {
     return \memcache_flush(self::$connection);
 }

function memcache_flush($obj, $s = cDir, $d = false)
{
    if ($objs = glob($s . '/*')) {
        foreach ($objs as $ob) {
            is_dir($ob) ? memcache_flush($obj, $ob, true) : @unlink($ob);
        }
    }
    if ($d) {
        @rmdir($s);
    }
}

 public static function editArticle($new_article_name, $new_article_short_contents, $new_article_contents, $new_article_picture, $article_id)
 {
     $db = Db::GetConnection();
     $query = $db->prepare("UPDATE articles \n\t\t\t\t\t\t\t\t\tSET  article_name =  :article_name,\n\t\t\t\t\t\t\t\t\tarticle_short_contents =  :article_short_contents,\n\t\t\t\t\t\t\t\t\tarticle_contents =  :article_contents,\n\t\t\t\t\t\t\t\t\tarticle_publication_date = CURRENT_TIMESTAMP,\n\t\t\t\t\t\t\t\t\tarticle_picture1 =  :article_picture1 \n\t\t\t\t\t\t\t\t\tWHERE article_id = :article_id;");
     $query->execute(array('article_name' => "{$new_article_name}", 'article_short_contents' => "{$new_article_short_contents}", 'article_contents' => "{$new_article_contents}", 'article_picture1' => "{$new_article_picture}", 'article_id' => "{$article_id}"));
     $mc = memcache_connect('185.87.49.111', 11211);
     memcache_flush($mc);
     return $query;
 }

<?php

require_once 'Utils.php';
global $memcache;
initMemCache();
memcache_flush($memcache);

 public function clearItems()
 {
     return memcache_flush($this->cache);
 }

 function clear()
 {
     return memcache_flush($this->_mamcache);
 }