There are few limitations of the PHP Agent. The PHP Agent does not:
- Monitor PHP applications in Zend Thread Safety (ZTS) mode. If you are using ZTS, AppDynamics suggests that you review your dependencies on ZTS to confirm that you actually need it, and if you do not, to switch to the non-ZTS mode
- Support Zend Monitor
- Officially support plug-ins that encrypt and, or obfuscate PHP code such as Zend Guard or ionCUBE Loader
- Support compatibility with the Xdebug module