error:SQLSTATE[HY000] [2002] No such file or directoryarray(4) {
  ["type"]=>
  int(8)
  ["message"]=>
  string(68) "PDO::__construct(): send of 5 bytes failed with errno=32 Broken pipe"
  ["file"]=>
  string(50) "/home/wwwroot/0738114cn/wwwroot/class/DB.class.php"
  ["line"]=>
  int(18)
}