<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >字符串运算符</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="运算符" HREF="language.operators.html"><LINK REL="PREVIOUS" TITLE="逻辑运算符" HREF="language.operators.logical.html"><LINK REL="NEXT" TITLE="数组运算符" HREF="language.operators.array.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="sect1" 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="language.operators.logical.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >章 15. 运算符</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="language.operators.array.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="sect1" ><H1 CLASS="sect1" ><A NAME="language.operators.string" >字符串运算符</A ></H1 ><P > 有两个字符串运算符。第一个是连接运算符（“.”），它返回其左右参数连接后的字符串。第二个是连接赋值运算符（“.=”），它将右边参数附加到左边的参数后。更多信息见<A HREF="language.operators.assignment.html" >赋值运算符</A >。 </P ><P > <DIV CLASS="informalexample" ><P ></P ><A NAME="AEN4553" ></A ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$a </font><font color="#007700">= </font><font color="#DD0000">"Hello "</font><font color="#007700">;<br /></font><font color="#0000BB">$b </font><font color="#007700">= </font><font color="#0000BB">$a </font><font color="#007700">. </font><font color="#DD0000">"World!"</font><font color="#007700">; </font><font color="#FF8000">// now $b contains "Hello World!"<br /><br /></font><font color="#0000BB">$a </font><font color="#007700">= </font><font color="#DD0000">"Hello "</font><font color="#007700">;<br /></font><font color="#0000BB">$a </font><font color="#007700">.= </font><font color="#DD0000">"World!"</font><font color="#007700">; </font><font color="#FF8000">// now $a contains "Hello World!"<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P ></P ></DIV > </P ><P > 参见<A HREF="language.types.string.html" >字符串类型</A >和<A HREF="ref.strings.html" >字符串函数</A >章节。 </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="language.operators.logical.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="language.operators.array.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >逻辑运算符</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="language.operators.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >数组运算符</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
