<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >json_decode</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="JSON Functions" HREF="ref.json.html"><LINK REL="PREVIOUS" TITLE="JSON Functions" HREF="ref.json.html"><LINK REL="NEXT" TITLE="json_encode" HREF="function.json-encode.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="ref.json.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.json-encode.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.json-decode" ></A >json_decode</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN103212" ></A ><P > (no version information, might be only in CVS)</P >json_decode -- Decodes a JSON string</DIV ><DIV CLASS="refsect1" ><A NAME="AEN103215" ></A ><H2 >说明</H2 >mixed <B CLASS="methodname" >json_decode</B > ( string json [, bool assoc] )<BR ></BR ><P > Takes a JSON encoded string and converts it into a PHP variable. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN103227" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >json</CODE ></DT ><DD ><P > The <CODE CLASS="parameter" >json</CODE > <A HREF="language.types.string.html" ><B CLASS="type" >string</B ></A > being decoded. </P ></DD ><DT ><CODE CLASS="parameter" >assoc</CODE ></DT ><DD ><P > When <TT CLASS="constant" ><B >TRUE</B ></TT >, returned <A HREF="language.types.object.html" ><B CLASS="type" >object</B ></A >s will be converted into associative <A HREF="language.types.array.html" ><B CLASS="type" >array</B ></A >s. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN103246" ></A ><H2 >返回值</H2 ><P > Returns an <A HREF="language.types.object.html" ><B CLASS="type" >object</B ></A > or if the optional <CODE CLASS="parameter" >assoc</CODE > parameter is <TT CLASS="constant" ><B >TRUE</B ></TT >, an associative <A HREF="language.types.array.html" ><B CLASS="type" >array</B ></A > is instead returned. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN103253" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN103256" ></A ><P ><B >例 1. <B CLASS="function" >json_decode()</B > examples</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$json </font><font color="#007700">= </font><font color="#DD0000">'{"a":1,"b":2,"c":3,"d":4,"e":5}'</font><font color="#007700">;<br /><br /></font><font color="#0000BB">var_dump</font><font color="#007700">(</font><font color="#0000BB">json_decode</font><font color="#007700">(</font><font color="#0000BB">$json</font><font color="#007700">));<br /></font><font color="#0000BB">var_dump</font><font color="#007700">(</font><font color="#0000BB">json_decode</font><font color="#007700">(</font><font color="#0000BB">$json</font><font color="#007700">, </font><font color="#0000BB">true</font><font color="#007700">));<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P >上例将输出:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >object(stdClass)#1 (5) { ["a"] => int(1) ["b"] => int(2) ["c"] => int(3) ["d"] => int(4) ["e"] => int(5) } array(5) { ["a"] => int(1) ["b"] => int(2) ["c"] => int(3) ["d"] => int(4) ["e"] => int(5) }</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN103262" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.json-encode.html" ><B CLASS="function" >json_encode()</B ></A ></TD ></TR ></TBODY ></TABLE ><P ></P > </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="ref.json.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.json-encode.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >JSON Functions</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.json.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" 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