You could try a PHP obfuscator. It turns normal, easy to read PHP code into gibberish. This google search brought up lots: search?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=dJQ&ei=Wq6ESrWWKIXSjAeZq5iPCA&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=php+obfuscation&spell=1