How to develop API interface with PHP,

How to use PHP to develop API interface, urgent and urgent
How to use PHP to develop API interface, like Sina Weibo, Renren as a third party (such as website owners, mobile software) to provide API interface.
Is there an example or example code that listens to people saying that Ucenter seems to be, but is not quite sure what to look at. Thank you
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http://www.phptogether.com/archives/11637

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http://www.phptogether.com/archives/11637
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RPC (remote Procedure call Protocol)-a remoting protocol that requests services from a remote computer program over a network without needing to know the underlying network technology.
Simply put, when a user executes a function, the actual operation takes place on the server side. The user simply gets the result of the server-side operation without the need for a real operation
Soap is an extension of PRC that allows complex data structures and objects to be processed

PHP provides a
XML-RPC extension for writing XML-RPC server and client
SOAP extensions that are used to write SOAP servers and clients. It supports a subset of the SOAP1.1,SOAP 1.2,wsdl1.1 specification

PHPRPC is a lightweight, secure, cross-network, cross-lingual, cross-platform, cross-domain, cross-field, multi-tiered, support-enabled, service-oriented, high-performance remote procedure call protocol that supports the transfer of reference parameters, supports content output redirection, supports hierarchical error handling, and supports session.
He's a code base.

Which depends on the extent and scope of the application you plan to use.

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https://github.com/quizlet/oauth2-php

This example can be used for a few changes.

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