http://www.fopo.com.ar/
visit this website
Free Online PHP Obfuscator
FOPO creates equivalent PHP obfuscated code which requires no special server runtime for execution. It's not one-way encryption but it will keep curious eyes away from your code. Submitted code gets deleted immediately after obfuscation and is not stored in any way. If you have any comments or suggestions feel free to reach me at fopo@dynsur.com.
ObfuscateDeobfuscate (cipher key required)