怎么给php添加授权域名或者授权码

如何给php添加授权域名或者授权码?
我用dede程序做了一个小网站.想给此程序添加授权域名或授权码./ 请问大家有什么办法.

就好比授权一个域名 baidu.com 授权码类似这样的 放在根目录下的license.key 文件里.

需要报酬也可以的... QQ:630555865

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------解决方案--------------------
建个文件 license.key，把上面那一串写里面，然后传到网站的根目录，等对方读取