/**
 	取得缓存值
 */
 function get($key)
 {
     $a = $this->file($key);
     if (!file_exists($a[0])) {
         return;
     }
     $data = file_get_contents($a[0]);
     $time = file_get_contents($a[1]);
     if ($time < 1) {
         $value = Str::re_cookie($data);
     } elseif ($time > 0) {
         if (filemtime($a[0]) + $time >= time()) {
             $value = Str::re_cookie($data);
         }
     }
     if ($value == '#sun#kang#zhang#yi') {
         return [];
     }
     return $value;
 }