Can I take out all the carriage returns and spaces within my php pages to make it more "garbled" for others to try to edit and rip apart ?

Will the pages all still function properly is done on a global scale to all my php files in a particular site ?

I realize that there are proggies that make them very hard to edit - but - I just want it to be pretty hard to edit (i.e. no encryption).

Any suggestions, software recommendation, or tips appreciated.