I want to write a script in PHP and javascript and somehow protect my source code so that I can sell my script.
I am looking for ideas how to protect my script. If I sell it to someone, how can I stop that person from redistributing it as their product?
I know there is ZEND and ionCube, but are there any other methods? As I don't like to force a user to have zend optimizer installed on the server.
Is there any way of generating a "serial number" protection for these scripts that cannot be removed by editing the code?
There are ways to obfuscate and encrypt your code but if you rely on your profit coming from folks having a hard time cracking your code, not on the quality/usability of your code/programming then I think you're approaching your market from the wrong perspective.
Make your code's accessibility a feature, which could make it easier for your customers to audit their security or get/make plugins to enhance your code's usability.
Sorry; this isn't really an answer to your question, is it?