<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >array_pop</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="Array 数组函数" HREF="ref.array.html"><LINK REL="PREVIOUS" TITLE="array_pad" HREF="function.array-pad.html"><LINK REL="NEXT" TITLE="array_product" HREF="function.array-product.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.array-pad.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.array-product.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.array-pop" ></A >array_pop</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN11635" ></A ><P > (PHP 4, PHP 5)</P >array_pop -- 将数组最后一个单元弹出(出栈)</DIV ><DIV CLASS="refsect1" ><A NAME="AEN11638" ></A ><H2 >说明</H2 >mixed <B CLASS="methodname" >array_pop</B > ( array &array )<BR ></BR ><P > <B CLASS="function" >array_pop()</B > 弹出并返回 <CODE CLASS="parameter" >array</CODE > 数组的最后一个单元,并将数组 <CODE CLASS="parameter" >array</CODE > 的长度减一。如果 <CODE CLASS="parameter" >array</CODE > 为空(或者不是数组)将返回 <TT CLASS="constant" ><B >NULL</B ></TT >。 </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B >使用本函数后会重置(<A HREF="function.reset.html" ><B CLASS="function" >reset()</B ></A >)数组指针。</P ></BLOCKQUOTE ></DIV ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN11656" ></A ><P ><B >例 1. <B CLASS="function" >array_pop()</B > 例子</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$stack </font><font color="#007700">= array(</font><font color="#DD0000">"orange"</font><font color="#007700">, </font><font color="#DD0000">"banana"</font><font color="#007700">, </font><font color="#DD0000">"apple"</font><font color="#007700">, </font><font color="#DD0000">"raspberry"</font><font color="#007700">);<br /></font><font color="#0000BB">$fruit </font><font color="#007700">= </font><font color="#0000BB">array_pop</font><font color="#007700">(</font><font color="#0000BB">$stack</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$stack</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P > 经过此操作后,<CODE CLASS="varname" >$stack</CODE > 将只有 3 个单元: </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> Array<br />(<br /> [0] => orange<br /> [1] => banana<br /> [2] => apple<br />)</font> </code></TD ></TR ></TABLE ><P > 并且 <TT CLASS="literal" >rasberry</TT > 将被赋给 <CODE CLASS="varname" >$fruit</CODE >。 </P ></DIV ></TD ></TR ></TABLE > </P ><P > 参见 <A HREF="function.array-push.html" ><B CLASS="function" >array_push()</B ></A >,<A HREF="function.array-shift.html" ><B CLASS="function" >array_shift()</B ></A > 和 <A HREF="function.array-unshift.html" ><B CLASS="function" >array_unshift()</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.array-pad.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.array-product.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >array_pad</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.array.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >array_product</TD ></TR ></TABLE ></DIV ></BODY ></HTML >