<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >get_headers</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="URL 函数" HREF="ref.url.html"><LINK REL="PREVIOUS" TITLE="base64_encode" HREF="function.base64-encode.html"><LINK REL="NEXT" TITLE="get_meta_tags" HREF="function.get-meta-tags.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.base64-encode.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.get-meta-tags.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.get-headers" ></A >get_headers</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN235691" ></A ><P > (PHP 5)</P >get_headers -- 取得服务器响应一个 HTTP 请求所发送的所有标头</DIV ><DIV CLASS="refsect1" ><A NAME="AEN235694" ></A ><H2 >说明</H2 >array <B CLASS="methodname" >get_headers</B > ( string url [, int format] )<BR ></BR ><P > <B CLASS="function" >get_headers()</B > 返回一个数组,包含有服务器响应一个 HTTP 请求所发送的标头。如果失败则返回 <TT CLASS="constant" ><B >FALSE</B ></TT > 并发出一条 <TT CLASS="constant" ><B >E_WARNING</B ></TT > 级别的错误信息。 </P ><P > 如果将可选的 <CODE CLASS="parameter" >format</CODE > 参数设为 1,则 <B CLASS="function" >get_headers()</B > 会解析相应的信息并设定数组的键名。 </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > 自 PHP 5.1.3 起本函数使用默认的流上下文,其可以用 <A HREF="function.stream-context-get-default.html" ><B CLASS="function" >stream_context_get_default()</B ></A > 函数设定和修改。 </P ></BLOCKQUOTE ></DIV ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN235716" ></A ><P ><B >例 1. <B CLASS="function" >get_headers()</B > 例子</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$url </font><font color="#007700">= </font><font color="#DD0000">'http://www.example.com'</font><font color="#007700">;<br /><br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">get_headers</font><font color="#007700">(</font><font color="#0000BB">$url</font><font color="#007700">));<br /><br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">get_headers</font><font color="#007700">(</font><font color="#0000BB">$url</font><font color="#007700">, </font><font color="#0000BB">1</font><font color="#007700">));<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P >上例的输出类似于:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >Array ( [0] => HTTP/1.1 200 OK [1] => Date: Sat, 29 May 2004 12:28:13 GMT [2] => Server: Apache/1.3.27 (Unix) (Red-Hat/Linux) [3] => Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT [4] => ETag: "3f80f-1b6-3e1cb03b" [5] => Accept-Ranges: bytes [6] => Content-Length: 438 [7] => Connection: close [8] => Content-Type: text/html ) Array ( [0] => HTTP/1.1 200 OK [Date] => Sat, 29 May 2004 12:28:14 GMT [Server] => Apache/1.3.27 (Unix) (Red-Hat/Linux) [Last-Modified] => Wed, 08 Jan 2003 23:11:55 GMT [ETag] => "3f80f-1b6-3e1cb03b" [Accept-Ranges] => bytes [Content-Length] => 438 [Connection] => close [Content-Type] => text/html )</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </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.base64-encode.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.get-meta-tags.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >base64_encode</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.url.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >get_meta_tags</TD ></TR ></TABLE ></DIV ></BODY ></HTML >