<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >class_parents</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="Standard PHP Library (SPL) Functions" HREF="ref.spl.html"><LINK REL="PREVIOUS" TITLE="class_implements" HREF="function.class-implements.html"><LINK REL="NEXT" TITLE="iterator_count" HREF="function.iterator-count.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.class-implements.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.iterator-count.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.class-parents" ></A >class_parents</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN215073" ></A ><P > (PHP 5)</P >class_parents -- Return the parent classes of the given class </DIV ><DIV CLASS="refsect1" ><A NAME="AEN215076" ></A ><H2 >说明</H2 >array <B CLASS="methodname" >class_parents</B > ( mixed class [, bool autoload] )<BR ></BR ><P > This function returns an array with the name of the parent classes of the given <CODE CLASS="parameter" >class</CODE >. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN215089" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >class</CODE ></DT ><DD ><P > An object (class instance) or a string (class name). </P ></DD ><DT ><CODE CLASS="parameter" >autoload</CODE ></DT ><DD ><P > Whether to allow this function to load the class automatically through the <A HREF="language.oop5.autoload.html" >__autoload</A > magic method. Defaults to <TT CLASS="constant" ><B >TRUE</B ></TT >. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN215105" ></A ><H2 >返回值</H2 ><P > Returns an array or <TT CLASS="constant" ><B >FALSE</B ></TT > on error. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN215109" ></A ><H2 >更新日志</H2 ><P > <DIV CLASS="informaltable" ><P ></P ><A NAME="AEN215112" ></A ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >版本</TH ><TH >说明</TH ></TR ></THEAD ><TBODY ><TR ><TD >5.1.0</TD ><TD > Added the option to pass the <CODE CLASS="parameter" >class</CODE > parameter as a string. Added the <CODE CLASS="parameter" >autoload</CODE > parameter. </TD ></TR ></TBODY ></TABLE ><P ></P ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN215124" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN215127" ></A ><P ><B >例 1. <B CLASS="function" >class_parents()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br /></font><font color="#007700">class </font><font color="#0000BB">foo </font><font color="#007700">{ }<br />class </font><font color="#0000BB">bar </font><font color="#007700">extends </font><font color="#0000BB">foo </font><font color="#007700">{}<br /><br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">class_parents</font><font color="#007700">(new </font><font color="#0000BB">bar</font><font color="#007700">));<br /><br /></font><font color="#FF8000">// since PHP 5.1.0 you may also specify the parameter as a string<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">class_parents</font><font color="#007700">(</font><font color="#DD0000">'bar'</font><font color="#007700">));<br /><br /><br />function </font><font color="#0000BB">__autoload</font><font color="#007700">(</font><font color="#0000BB">$class_name</font><font color="#007700">) {<br /> require_once </font><font color="#0000BB">$class_name </font><font color="#007700">. </font><font color="#DD0000">'.php'</font><font color="#007700">;<br />}<br /><br /></font><font color="#FF8000">// use __autoload to load the 'not_loaded' class<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">class_parents</font><font color="#007700">(</font><font color="#DD0000">'not_loaded'</font><font color="#007700">, </font><font color="#0000BB">true</font><font color="#007700">));<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P >上例的输出类似于:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >Array ( [foo] => foo ) Array ( [parent_of_not_loaded] => parent_of_not_loaded )</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN215133" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.class-implements.html" ><B CLASS="function" >class_implements()</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="function.class-implements.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.iterator-count.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >class_implements</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.spl.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >iterator_count</TD ></TR ></TABLE ></DIV ></BODY ></HTML >