Possible Duplicate:
Code obfuscator for php?
Can I encrypt PHP source or compile it so others can’t see it? and how?
How is it possible to protect PHP code?
I want to encrypt PHP code so that others should not modify and cannot view the code. If I run that encrypted PHP file in the browser its functionality should work. I have used few codes and some software like PHP Bambalam PHP EXE Compiler/Embedder ,phc-win,zzee php etc., with those I am able to encrypt PHP code but failed to run in the server. It was showing Php encrypted code instead of its functionality.
Can any one suggest me a way to encrypt a file which should be free and run that encrypted code in the server?