Chapter 10. Reserved methods
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## Chapter 10. Reserved methods

In order to extend the functionality offered by XML-RPC servers without impacting on the protocol, reserved methods are supported in this release.

All methods starting with `system.` are considered reserved by the server. PHP for XML-RPC itself provides four special methods, detailed in this chapter.

Note that all server objects will automatically respond to clients querying these methods, unless the property allow_system_funcs has been set to `false` before calling the `service()` method. This might pose a security risk if the server is exposed to public access, e.g. on the internet.

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5. Debugging aids | Home | 1. system.getCapabilities