<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >urldecode</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="URL 函数" HREF="ref.url.html"><LINK REL="PREVIOUS" TITLE="rawurlencode" HREF="function.rawurlencode.html"><LINK REL="NEXT" TITLE="urlencode" HREF="function.urlencode.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" 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="function.rawurlencode.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.urlencode.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.urldecode" ></A >urldecode</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN235954" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >urldecode -- 解码已编码的 URL 字符串</DIV ><DIV CLASS="refsect1" ><A NAME="AEN235957" ></A ><H2 >说明</H2 >string <B CLASS="methodname" >urldecode</B > ( string str )<BR ></BR ><P > 解码给出的已编码字符串中的任何 <TT CLASS="literal" >%<TT CLASS="replaceable" ><I >##</I ></TT ></TT >。返回解码后的字符串。 <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN235968" ></A ><P ><B >例 1. <B CLASS="function" >urldecode()</B > 例子</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$a </font><font color="#007700">= </font><font color="#0000BB">explode</font><font color="#007700">(</font><font color="#DD0000">'&'</font><font color="#007700">, </font><font color="#0000BB">$QUERY_STRING</font><font color="#007700">);<br /></font><font color="#0000BB">$i </font><font color="#007700">= </font><font color="#0000BB">0</font><font color="#007700">;<br />while (</font><font color="#0000BB">$i </font><font color="#007700">< </font><font color="#0000BB">count</font><font color="#007700">(</font><font color="#0000BB">$a</font><font color="#007700">)) {<br /> </font><font color="#0000BB">$b </font><font color="#007700">= </font><font color="#0000BB">split</font><font color="#007700">(</font><font color="#DD0000">'='</font><font color="#007700">, </font><font color="#0000BB">$a</font><font color="#007700">[</font><font color="#0000BB">$i</font><font color="#007700">]);<br /> echo </font><font color="#DD0000">'Value for parameter '</font><font color="#007700">, </font><font color="#0000BB">htmlspecialchars</font><font color="#007700">(</font><font color="#0000BB">urldecode</font><font color="#007700">(</font><font color="#0000BB">$b</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">])),<br /> </font><font color="#DD0000">' is '</font><font color="#007700">, </font><font color="#0000BB">htmlspecialchars</font><font color="#007700">(</font><font color="#0000BB">urldecode</font><font color="#007700">(</font><font color="#0000BB">$b</font><font color="#007700">[</font><font color="#0000BB">1</font><font color="#007700">])), </font><font color="#DD0000">"<br />\n"</font><font color="#007700">;<br /> </font><font color="#0000BB">$i</font><font color="#007700">++;<br />}<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > 参见 <A HREF="function.urlencode.html" ><B CLASS="function" >urlencode()</B ></A >,<A HREF="function.rawurlencode.html" ><B CLASS="function" >rawurlencode()</B ></A > 和 <A HREF="function.rawurldecode.html" ><B CLASS="function" >rawurldecode()</B ></A >。 </P ></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="function.rawurlencode.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="function.urlencode.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >rawurlencode</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.url.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >urlencode</TD ></TR ></TABLE ></DIV ></BODY ></HTML >