<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >New Extensions</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="Migrating from PHP 5.1.x to PHP 5.2.x" HREF="migration52.html"><LINK REL="PREVIOUS" TITLE="Removed Extensions" HREF="migration52.removed-extensions.html"><LINK REL="NEXT" TITLE="New Classes" HREF="migration52.classes.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="section" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="migration52.removed-extensions.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >附录 B. Migrating from PHP 5.1.x to PHP 5.2.x</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="migration52.classes.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="migration52.new-extensions" >New Extensions</A ></H1 ><P > The following are new extensions added (by default) as of PHP 5.2.0: </P ><P ></P ><UL ><LI ><P > <A HREF="ref.filter.html" >Filter</A > - validates and filters data, and is designed for use with insecure data such as user input. This extension is enabled by default; the default mode RAW does not impact input data in any way. </P ></LI ><LI ><P > <A HREF="ref.json.html" >JSON</A > - implements the JavaScript Object Notation (JSON) data interchange format. This extension is enabled by default. </P ></LI ><LI ><P > <A HREF="ref.zip.html" >Zip</A > - enables you to transparently read or write ZIP compressed archives and the files inside them. </P ></LI ></UL ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="migration52.removed-extensions.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="migration52.classes.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Removed Extensions</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="migration52.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >New Classes</TD ></TR ></TABLE ></DIV ></BODY ></HTML >