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# CLXVII. XML-RPC Functions

# Introduction

These functions can be used to write XML-RPC servers and clients. You can find more information about XML-RPC at http://www.xmlrpc.com/, and more documentation on this extension and its functions at http://xmlrpc-epi.sourceforge.net/.

Warning
This extension is EXPERIMENTAL. The behaviour of this extension -- including the names of its functions and anything else documented about this extension -- may change without notice in a future release of PHP. Use this extension at your own risk.

# Requirements

No external libraries are needed to build this extension.

# Installation

XML-RPC support in PHP is not enabled by default. You will need to use the --with-xmlrpc[=DIR] configuration option when compiling PHP to enable XML-RPC support. This extension is bundled into PHP as of 4.1.0.

# Runtime Configuration

The behaviour of these functions is affected by settings in `php.ini`.

Table 1. XML-RPC configuration options

Name | Default | Changeable | Changelog
--- | --- | --- | ---
xmlrpc_errors | "0" | PHP_INI_SYSTEM | Available since PHP 4.1.0.
xmlrpc_error_number | "0" | PHP_INI_ALL | Available since PHP 4.1.0.

For further details and definitions of the PHP_INI_* constants, see the Appendix G.

# Resource Types

This extension has no resource types defined.

# Predefined Constants

This extension has no constants defined.

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