Publisher review:phpSHIELD is a PHP Encoder and encryption product. phpSHIELD is a PHP Encoder and encryption product. This encryption and obfuscation technology is far superior to script-based encoding, allowing you to protect your PHP source code and distribute it in the knowledge that you are as safe as can be.
Features:
Fully native byte encoding Native encoding to fully protect your application
PHP5 and PHP4 support Both PHP5 and PHP4 support built in to the encoder and loaders
Fast encryption Powerful and fast encryption to protect your files
Easy to use A simple and easy to use interface. Three steps and your files are protected
Windows encoding client Simple and easy to use Windows client encoder
Linux ready loaders Linux ready loaders for running protected scripts
MacOSx ready loaders MacOSX support. We support php under Mac OS X
phpSHIELD Application 3.0 is a PHP script for Security Systems scripts design by phpSHIELD.com.
It runs on following operating system: Windows / Linux / Mac OS / BSD / Solaris.
Operating system:Windows / Linux / Mac OS / BSD / Solaris
phpSHIELD Application 3.0 script details 
