: Hardest to crack; supported by almost all major web hosts; offers licensing features to restrict usage to specific IPs or dates.
Are you looking to protect a for distribution, or are you trying to secure a server from malicious script detection? Is PHP obfuscation necessary at all? - Stack Overflow best php obfuscator top
Works with the Zend Optimizer/Enabler to provide a performance boost alongside protection. : Hardest to crack; supported by almost all