$this->systemSetKey(array(‘name‘=>$admin_info[‘admin_name‘], ‘id‘=>$admin_info[‘admin_id‘],‘gid‘=>$admin_info[‘admin_gid‘],‘sp‘=>$admin_info[‘admin_is_super‘]));//登陸成功之后做得事情

 /**   * 系統后臺 會員登錄后 將會員驗證內容寫入對應cookie中   *   * @param string $name 用戶名   * @param int $id 用戶ID   * @return bool 布爾類型的返回結果   */  protected final function systemSetKey($user){    setNcCookie(‘sys_key‘,encrypt(serialize($user),MD5_KEY),3600,‘‘,null);//設置cookie 過期時間為30分鐘。這邊設置cookie框架有帶自己加密規則，具體是否需要加密自己看著設置。  }

protected function __construct(){    Language::read(‘common,layout‘);    /**     * 驗證用戶是否登錄     * $admin_info 管理員資料 name id     */    $this->admin_info = $this->systemLogin();//取得管理員的資料，之后的子類控制器繼承構造方法    if ($this->admin_info[‘id‘] != 1){      // 驗證權限      $this->checkPermission();    }    //轉碼 防止GBK下用ajax調用時傳漢字數據出現亂碼    if (($_GET[‘branch‘]!=‘‘ || $_GET[‘op‘]==‘ajax‘) && strtoupper(CHARSET) == ‘GBK‘){      $_GET = Language::getGBK($_GET);    }  }  /**   * 系統后臺登錄驗證   *   * @param   * @return array 數組類型的返回結果   */  protected final function systemLogin(){    //取得cookie內容，解密，和系統匹配    $user = unserialize(decrypt(cookie(‘sys_key‘),MD5_KEY));//取cookie 里面儲存的信息，現在使用的框架里面自定義了cookie的加密方式    if (!key_exists(‘gid‘,(array)$user) || !isset($user[‘sp‘]) || (empty($user[‘name‘]) || empty($user[‘id‘]))){  //假如不存在說明用戶沒登陸或者用戶長時間未操作cookie時間過期 跳到登陸頁面去      @header(‘Location: index.php?mod=login&action=login‘);exit;    }else {      $this->systemSetKey($user);//如果用戶有登陸的話，每一個操作都會重寫刷新cookie；    }    return $user;  }

/** * 加密函數 * * @param string $txt 需要加密的字符串 * @param string $key 密鑰 * @return string 返回加密結果 */function encrypt($txt, $key = ‘‘){  if (empty($txt)) return $txt;  if (empty($key)) $key = md5(MD5_KEY);  $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.";  $ikey ="-x6g6ZWm2G9g_vr0Bo.pOq3kRIxsZ6rm";  $nh1 = rand(0,64);  $nh2 = rand(0,64);  $nh3 = rand(0,64);  $ch1 = $chars{$nh1};  $ch2 = $chars{$nh2};  $ch3 = $chars{$nh3};  $nhnum = $nh1 + $nh2 + $nh3;  $knum = 0;$i = 0;  while(isset($key{$i})) $knum +=ord($key{$i++});  $mdKey = substr(md5(md5(md5($key.$ch1).$ch2.$ikey).$ch3),$nhnum%8,$knum%8 + 16);  $txt = base64_encode(time().‘_‘.$txt);  $txt = str_replace(array(‘+‘,‘/‘,‘=‘),array(‘-‘,‘_‘,‘.‘),$txt);  $tmp = ‘‘;  $j=0;$k = 0;  $tlen = strlen($txt);  $klen = strlen($mdKey);  for ($i=0; $i<$tlen; $i++) {    $k = $k == $klen ? 0 : $k;    $j = ($nhnum+strpos($chars,$txt{$i})+ord($mdKey{$k++}))%64;    $tmp .= $chars{$j};  }  $tmplen = strlen($tmp);  $tmp = substr_replace($tmp,$ch3,$nh2 % ++$tmplen,0);  $tmp = substr_replace($tmp,$ch2,$nh1 % ++$tmplen,0);  $tmp = substr_replace($tmp,$ch1,$knum % ++$tmplen,0);  return $tmp;}

/** * 解密函數 * * @param string $txt 需要解密的字符串 * @param string $key 密匙 * @return string 字符串類型的返回結果 */function decrypt($txt, $key = ‘‘, $ttl = 0){  if (empty($txt)) return $txt;  if (empty($key)) $key = md5(MD5_KEY);  $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.";  $ikey ="-x6g6ZWm2G9g_vr0Bo.pOq3kRIxsZ6rm";  $knum = 0;$i = 0;  $tlen = @strlen($txt);  while(isset($key{$i})) $knum +=ord($key{$i++});  $ch1 = @$txt{$knum % $tlen};  $nh1 = strpos($chars,$ch1);  $txt = @substr_replace($txt,‘‘,$knum % $tlen--,1);  $ch2 = @$txt{$nh1 % $tlen};  $nh2 = @strpos($chars,$ch2);  $txt = @substr_replace($txt,‘‘,$nh1 % $tlen--,1);  $ch3 = @$txt{$nh2 % $tlen};  $nh3 = @strpos($chars,$ch3);  $txt = @substr_replace($txt,‘‘,$nh2 % $tlen--,1);  $nhnum = $nh1 + $nh2 + $nh3;  $mdKey = substr(md5(md5(md5($key.$ch1).$ch2.$ikey).$ch3),$nhnum % 8,$knum % 8 + 16);  $tmp = ‘‘;  $j=0; $k = 0;  $tlen = @strlen($txt);  $klen = @strlen($mdKey);  for ($i=0; $i<$tlen; $i++) {    $k = $k == $klen ? 0 : $k;    $j = strpos($chars,$txt{$i})-$nhnum - ord($mdKey{$k++});    while ($j<0) $j+=64;    $tmp .= $chars{$j};  }  $tmp = str_replace(array(‘-‘,‘_‘,‘.‘),array(‘+‘,‘/‘,‘=‘),$tmp);  $tmp = trim(base64_decode($tmp));  if (preg_match("//d{10}_/s",substr($tmp,0,11))){    if ($ttl > 0 && (time() - substr($tmp,0,11) > $ttl)){      $tmp = null;    }else{      $tmp = substr($tmp,11);    }  }  return $tmp;}