"; echo $key; $md5Key = md5($key); return base64_encode(mcrypt_encrypt(self::CIPHER, substr($md5Key,0,16), $str, self::MODE, substr($md5Key,0,8))); } /** * 解密 * @param type $str * @param type $key * @return type */ static public function decode( $str, $key ){ $md5Key = md5($key); return mcrypt_decrypt(self::CIPHER, substr($md5Key,0,16),base64_decode($str), self::MODE, substr($md5Key,0,8)); } }