<?PHP
class Cookie
{
/**
  * 解密已经加密了的cookie
  *
  * @param 
  * @author 编程之家 jb51.cc jb51.cc
  * @param string $encryptedText
  * @return string
  */
 private static function _decrypt($encryptedText)
 {
  $key = Config::get('secret_key');
  $cryptText = base64_decode($encryptedText);
  $ivSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256,MCRYPT_MODE_ECB);
  $iv = mcrypt_create_iv($ivSize,MCRYPT_RAND);
  $decryptText = mcrypt_decrypt(MCRYPT_RIJNDAEL_256,$key,$cryptText,MCRYPT_MODE_ECB,$iv);
  return trim($decryptText);
 }
 /**
  * 加密cookie
  *
  * @param string $plainText
  * @return string
  */
 private static function _encrypt($plainText)
 {
  $key = Config::get('secret_key');
  $ivSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256,MCRYPT_RAND);
  $encryptText = mcrypt_encrypt(MCRYPT_RIJNDAEL_256,$plainText,$iv);
  return trim(base64_encode($encryptText));
 }
 
 /**
  * 删除cookie
  * 
  * @param array $args
  * @return boolean
  */
 public static function del($args)
 {
  $name = $args['name'];
  $domain = isset($args['domain']) ? $args['domain'] : null;
  return isset($_COOKIE[$name]) ? setcookie($name,'',time() - 86400,'/',$domain) : true;
 }
 
 /**
  * 得到指定cookie的值
  * 
  * @param string $name
  */
 public static function get($name)
 {
  return isset($_COOKIE[$name]) ? self::_decrypt($_COOKIE[$name]) : null;
 }
 
 /**
  * 设置cookie
  *
  * @param array $args
  * @return boolean
  */
 public static function set($args)
 {
  $name = $args['name'];
  $value= self::_encrypt($args['value']);
  $expire = isset($args['expire']) ? $args['expire'] : null;
  $path = isset($args['path']) ? $args['path'] : '/';
  $domain = isset($args['domain']) ? $args['domain'] : null;
  $secure = isset($args['secure']) ? $args['secure'] : 0;
  return setcookie($name,$value,$expire,$path,$domain,$secure);
 }
}


/***   代码来自编程之家 jb51.cc（jb51.cc）   ***/