PHP LockIt! from Z-Host gives you the ability to obfuscate and encrypt your PHP scripts before distrubution at an affordable price.

Use it for encoding your own scripts which you distribute to others, or for encoding third party scripts containing your MySQL username and password.

Obfuscation changes the variable names, function names and constant names in your code, making it unreadable. The obfuscated code is then encrypted using a unique key to generate the locked code. Additional optimisations are also available to speed up the locked code.