<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >nl2br</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="String 字符串处理函数" HREF="ref.strings.html"><LINK REL="PREVIOUS" TITLE="nl_langinfo" HREF="function.nl-langinfo.html"><LINK REL="NEXT" TITLE="number_format" HREF="function.number-format.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.nl-langinfo.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.number-format.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.nl2br" ></A >nl2br</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN226281" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >nl2br -- Inserts HTML line breaks before all newlines in a string </DIV ><DIV CLASS="refsect1" ><A NAME="AEN226284" ></A ><H2 >Description</H2 >string <B CLASS="methodname" >nl2br</B > ( string string )<BR ></BR ><P > Returns <CODE CLASS="parameter" >string</CODE > with '<br />' inserted before all newlines. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > Starting with PHP 4.0.5, <B CLASS="function" >nl2br()</B > is now XHTML compliant. All versions before 4.0.5 will return <CODE CLASS="parameter" >string</CODE > with '<br>' inserted before newlines instead of '<br />'. </P ></BLOCKQUOTE ></DIV ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN226299" ></A ><P ><B >例 1. using <B CLASS="function" >nl2br()</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">echo </font><font color="#0000BB">nl2br</font><font color="#007700">(</font><font color="#DD0000">"foo isn't\n bar"</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P > this will output : </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >foo isn't<br /> bar</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > See also <A HREF="function.htmlspecialchars.html" ><B CLASS="function" >htmlspecialchars()</B ></A >, <A HREF="function.htmlentities.html" ><B CLASS="function" >htmlentities()</B ></A >, <A HREF="function.wordwrap.html" ><B CLASS="function" >wordwrap()</B ></A >, and <A HREF="function.str-replace.html" ><B CLASS="function" >str_replace()</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.nl-langinfo.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.number-format.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >nl_langinfo</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.strings.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >number_format</TD ></TR ></TABLE ></DIV ></BODY ></HTML >