<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >strrchr</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="strpos" HREF="function.strpos.html"><LINK REL="NEXT" TITLE="strrev" HREF="function.strrev.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.strpos.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.strrev.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.strrchr" ></A >strrchr</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN228018" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >strrchr -- Find the last occurrence of a character in a string </DIV ><DIV CLASS="refsect1" ><A NAME="AEN228021" ></A ><H2 >Description</H2 >string <B CLASS="methodname" >strrchr</B > ( string haystack, string needle )<BR ></BR ><P > This function returns the portion of <CODE CLASS="parameter" >haystack</CODE > which starts at the last occurrence of <CODE CLASS="parameter" >needle</CODE > and goes until the end of <CODE CLASS="parameter" >haystack</CODE >. </P ><P > Returns <TT CLASS="constant" ><B >FALSE</B ></TT > if <CODE CLASS="parameter" >needle</CODE > is not found. </P ><P > If <CODE CLASS="parameter" >needle</CODE > contains more than one character, only the first is used. This behavior is different from that of <A HREF="function.strchr.html" ><B CLASS="function" >strchr()</B ></A >. </P ><P > If <CODE CLASS="parameter" >needle</CODE > is not a string, it is converted to an integer and applied as the ordinal value of a character. <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN228044" ></A ><P ><B >例 1. <B CLASS="function" >strrchr()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#FF8000">// get last directory in $PATH<br /></font><font color="#0000BB">$dir </font><font color="#007700">= </font><font color="#0000BB">substr</font><font color="#007700">(</font><font color="#0000BB">strrchr</font><font color="#007700">(</font><font color="#0000BB">$PATH</font><font color="#007700">, </font><font color="#DD0000">":"</font><font color="#007700">), </font><font color="#0000BB">1</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// get everything after last newline<br /></font><font color="#0000BB">$text </font><font color="#007700">= </font><font color="#DD0000">"Line 1\nLine 2\nLine 3"</font><font color="#007700">;<br /></font><font color="#0000BB">$last </font><font color="#007700">= </font><font color="#0000BB">substr</font><font color="#007700">(</font><font color="#0000BB">strrchr</font><font color="#007700">(</font><font color="#0000BB">$text</font><font color="#007700">, </font><font color="#0000BB">10</font><font color="#007700">), </font><font color="#0000BB">1 </font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > <B CLASS="function" >strrchr()</B > has been binary safe since PHP 4.3.0 </P ><P > See also <A HREF="function.strstr.html" ><B CLASS="function" >strstr()</B ></A >, <A HREF="function.substr.html" ><B CLASS="function" >substr()</B ></A >, and <A HREF="function.stristr.html" ><B CLASS="function" >stristr()</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.strpos.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.strrev.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >strpos</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" >strrev</TD ></TR ></TABLE ></DIV ></BODY ></HTML >