PHP restricts domain names to protect source code from being copied

What should I do if I don't want to be directly used by others? The first thing that comes to mind is encryption. However, in addition to Zend5 encryption, other encryption methods are vulnerable.

What should I do if I don't want to be directly used by others? The first thing that comes to mind is encryption. But now, in addition to Zend 5 encryption, it is still hard to crack, and other encryption methods are vulnerable. Even if you don't crack it, malicious people can use your source code to build a website that is exactly the same as yours. This will not make your work achievements be possessed by others. The following describes how to restrict domain names to protect your source code from being directly copied and run.

How can I restrict domain names through programs to protect the source code? For example, your website will use www.phpernote.com in the future. if the PHP program is lost, even if others use your PHP source code, the website cannot run if the domain name is incorrect, at the same time, the source code is encrypted, so that nothing is lost.

The source code of the PHP program that limits domain names is as follows:

Put the source code in the PHP program. you don't need to explain the specific function. Then use Zend 5 for encryption and integration, so you don't have to worry about losing your PHP source code.