SourceGuardian for Linux (64-bit) is for protecting and encoding your PHP source code assets. Protect PHP Scripts using the SourceGuardian for PHP Encoder. We encode your PHP code by compiling the PHP source code into a binary bytecode format, which is then supplemented an encryption layer. You can use obfuscation of several levels of complexity to add another protection layer. No changes can be made to the protected script once they have been encoded, which adds an additional security level and any changes to an encoded file will make it unusable.