Questions about the use of the program, friends to see.
I would like to ask you two questions.
Question one:
Like some online programs such as Ecshop these, if you are free to use, then can only use 30 days, expired can not be used; If you are paid, then you will be able to use a year, a year later if you do not renew the fee will not be used. How is it realized?
question two:
A website, I gave a use, once he officially online (a.com), he can only use this site (a.com), if you want to use the B.Com can not, ask such an implementation? If so, can the principle be talked about? Thank you, sir.
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Software uses system files (such as Windows Registry) to save the validity period information, run-time check whether it expires
There is also a file saved as a companion to the software.
Websites can be saved with accompanying files, but the validator should be encrypted or scrambling
For your example, just determine if $_server[' http_host ' is a bound domain name.
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This is what you do: deleting any of the basic files will cause the system to crash
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Call the core code with RPC.
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Reference:
Quote: Reference:
Software uses system files (such as Windows Registry) to save the validity period information, run-time check whether it expires
There is also a file saved as a companion to the software.
Websites can be saved with accompanying files, but the validator should be encrypted or scrambling
For your example, just determine if $_server[' http_host ' is a bound domain name.
If you use someone to delete the relevant files and related program code, then it is impossible, right?
Ecshop Admin backstage built a lot of back door, if you know PHP, JS words can quickly find out and clear.
Ecshop does not have Zend encryption.
