Question

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How to implement licensing in php downloadable application

I am developing a web based software, i wonder if it’s possible to protect a website developed with PHP from being copied, i mean i want to make sure that the user don’t copy the software and sell it or give it to another person.

Answer 1

There is software that encrypts your code to unreadable code.

For example:
http://www.ioncube.com/
http://www.byterun.com/

You can encrypt your code for free (need to do it file by file) on http://www.byterun.com/free-php-encoder.php but it’s not to hard to decrypt the free version.

If you can encrypt your source, you can check the date of the server, and if the date set in your config is older then 30 days, you can throw an exception that the trial has expired.