动态执行一个函数，可用于防止程序被破解，动态执行的代码，可放入到服务器，然后由服务器返回后，在执行，绝对是防破解的好方法！-Dynamic perform a function that can be used to prevent the program from being cracked, dynamic execution of code that can be put into the server, and then returned by the server after exec