<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >ftp_cdup</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="FTP 函数" HREF="ref.ftp.html"><LINK REL="PREVIOUS" TITLE="ftp_alloc" HREF="function.ftp-alloc.html"><LINK REL="NEXT" TITLE="ftp_chdir" HREF="function.ftp-chdir.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.ftp-alloc.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.ftp-chdir.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.ftp-cdup" ></A >ftp_cdup</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN61261" ></A ><P > (PHP 3 >= 3.0.13, PHP 4, PHP 5)</P >ftp_cdup -- 切换到当前目录的父目录</DIV ><DIV CLASS="refsect1" ><A NAME="AEN61264" ></A ><H2 >说明</H2 >bool <B CLASS="methodname" >ftp_cdup</B > ( resource ftp_stream )<BR ></BR ><P > 切换目录至当前目录的父目录 (上级目录)。 </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN61273" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >ftp_stream</CODE ></DT ><DD ><P > FTP 连接的标识符。 </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN61282" ></A ><H2 >返回值</H2 ><P > 如果成功则返回 <TT CLASS="constant" ><B >TRUE</B ></TT >,失败则返回 <TT CLASS="constant" ><B >FALSE</B ></TT >。 </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN61287" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN61290" ></A ><P ><B >例 1. <B CLASS="function" >ftp_cdup()</B > 例子</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php <br /></font><font color="#FF8000">// set up basic connection <br /></font><font color="#0000BB">$conn_id </font><font color="#007700">= </font><font color="#0000BB">ftp_connect</font><font color="#007700">(</font><font color="#0000BB">$ftp_server</font><font color="#007700">); <br /><br /></font><font color="#FF8000">// login with username and password <br /></font><font color="#0000BB">$login_result </font><font color="#007700">= </font><font color="#0000BB">ftp_login</font><font color="#007700">(</font><font color="#0000BB">$conn_id</font><font color="#007700">, </font><font color="#0000BB">$ftp_user_name</font><font color="#007700">, </font><font color="#0000BB">$ftp_user_pass</font><font color="#007700">); <br /><br /></font><font color="#FF8000">// change the current directory to html <br /></font><font color="#0000BB">ftp_chdir</font><font color="#007700">(</font><font color="#0000BB">$conn_id</font><font color="#007700">, </font><font color="#DD0000">'html'</font><font color="#007700">); <br /><br />echo </font><font color="#0000BB">ftp_pwd</font><font color="#007700">(</font><font color="#0000BB">$conn_id</font><font color="#007700">); </font><font color="#FF8000">// /html <br /><br />// return to the parent directory <br /></font><font color="#007700">if (</font><font color="#0000BB">ftp_cdup</font><font color="#007700">(</font><font color="#0000BB">$conn_id</font><font color="#007700">)) { <br /> echo </font><font color="#DD0000">"cdup successful\n"</font><font color="#007700">; <br />} else { <br /> echo </font><font color="#DD0000">"cdup not successful\n"</font><font color="#007700">; <br />} <br /><br />echo </font><font color="#0000BB">ftp_pwd</font><font color="#007700">(</font><font color="#0000BB">$conn_id</font><font color="#007700">); </font><font color="#FF8000">// / <br /><br /></font><font color="#0000BB">ftp_close</font><font color="#007700">(</font><font color="#0000BB">$conn_id</font><font color="#007700">); <br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN61294" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.ftp-chdir.html" ><B CLASS="function" >ftp_chdir()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.ftp-pwd.html" ><B CLASS="function" >ftp_pwd()</B ></A ></TD ></TR ></TBODY ></TABLE ><P ></P > </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.ftp-alloc.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.ftp-chdir.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ftp_alloc</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.ftp.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ftp_chdir</TD ></TR ></TABLE ></DIV ></BODY ></HTML >