<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >get_object_vars</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="Classes/Objects 类/对象函数" HREF="ref.classobj.html"><LINK REL="PREVIOUS" TITLE="get_declared_interfaces" HREF="function.get-declared-interfaces.html"><LINK REL="NEXT" TITLE="get_parent_class" HREF="function.get-parent-class.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.get-declared-interfaces.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.get-parent-class.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.get-object-vars" ></A >get_object_vars</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN16986" ></A ><P > (PHP 4, PHP 5)</P >get_object_vars -- 返回由对象属性组成的关联数组</DIV ><DIV CLASS="refsect1" ><A NAME="AEN16989" ></A ><H2 >说明</H2 >array <B CLASS="methodname" >get_object_vars</B > ( object obj )<BR ></BR ><P > 返回由 <CODE CLASS="parameter" >obj</CODE > 指定的对象中定义的属性组成的关联数组。 </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > 在 PHP 4.2.0 之前的版本中,如果在 <CODE CLASS="parameter" >obj</CODE > 对象实例中声明的变量没有被赋值,则它们将不会在返回的数组中。而在 PHP 4.2.0 之后,这些变量作为键名将被赋予 <TT CLASS="constant" ><B >NULL</B ></TT > 值。 </P ></BLOCKQUOTE ></DIV ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN17004" ></A ><P ><B >例 1. 使用 <B CLASS="function" >get_object_vars()</B ></B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#007700">class </font><font color="#0000BB">Point2D </font><font color="#007700">{<br /> var </font><font color="#0000BB">$x</font><font color="#007700">, </font><font color="#0000BB">$y</font><font color="#007700">;<br /> var </font><font color="#0000BB">$label</font><font color="#007700">;<br /><br /> function </font><font color="#0000BB">Point2D</font><font color="#007700">(</font><font color="#0000BB">$x</font><font color="#007700">, </font><font color="#0000BB">$y</font><font color="#007700">)<br /> {<br /> </font><font color="#0000BB">$this</font><font color="#007700">-></font><font color="#0000BB">x </font><font color="#007700">= </font><font color="#0000BB">$x</font><font color="#007700">;<br /> </font><font color="#0000BB">$this</font><font color="#007700">-></font><font color="#0000BB">y </font><font color="#007700">= </font><font color="#0000BB">$y</font><font color="#007700">;<br /> }<br /><br /> function </font><font color="#0000BB">setLabel</font><font color="#007700">(</font><font color="#0000BB">$label</font><font color="#007700">)<br /> {<br /> </font><font color="#0000BB">$this</font><font color="#007700">-></font><font color="#0000BB">label </font><font color="#007700">= </font><font color="#0000BB">$label</font><font color="#007700">;<br /> }<br /><br /> function </font><font color="#0000BB">getPoint</font><font color="#007700">()<br /> {<br /> return array(</font><font color="#DD0000">"x" </font><font color="#007700">=> </font><font color="#0000BB">$this</font><font color="#007700">-></font><font color="#0000BB">x</font><font color="#007700">,<br /> </font><font color="#DD0000">"y" </font><font color="#007700">=> </font><font color="#0000BB">$this</font><font color="#007700">-></font><font color="#0000BB">y</font><font color="#007700">,<br /> </font><font color="#DD0000">"label" </font><font color="#007700">=> </font><font color="#0000BB">$this</font><font color="#007700">-></font><font color="#0000BB">label</font><font color="#007700">);<br /> }<br />}<br /><br /></font><font color="#FF8000">// "$label" is declared but not defined<br /></font><font color="#0000BB">$p1 </font><font color="#007700">= new </font><font color="#0000BB">Point2D</font><font color="#007700">(</font><font color="#0000BB">1.233</font><font color="#007700">, </font><font color="#0000BB">3.445</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">get_object_vars</font><font color="#007700">(</font><font color="#0000BB">$p1</font><font color="#007700">));<br /><br /></font><font color="#0000BB">$p1</font><font color="#007700">-></font><font color="#0000BB">setLabel</font><font color="#007700">(</font><font color="#DD0000">"point #1"</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">get_object_vars</font><font color="#007700">(</font><font color="#0000BB">$p1</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" >Array ( [x] => 1.233 [y] => 3.445 [label] => ) Array ( [x] => 1.233 [y] => 3.445 [label] => point #1 )</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > 参见 <A HREF="function.get-class-methods.html" ><B CLASS="function" >get_class_methods()</B ></A > 和 <A HREF="function.get-class-vars.html" ><B CLASS="function" >get_class_vars()</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%" 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