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简单的一个函数：get_header
2008-04-17 10:31
2007-12-09 21:51

简单的一个函数：get_header($URL)

get_headers -- Fetches all the headers sent by the server in response to a HTTP request

                         抓取服务器端响应http请求发送的头信息

<?php

$url = 'http://www.sina.com';

echo "<pre>";

print_r(get_headers($url));

print_r(get_headers($url, 1));

echo "</pre>";

?>

返回结果

Array


(


      [0] => HTTP/1.0 200 OK


      [1] => Date: Sun, 09 Dec 2007 13:43:55 GMT


      [2] => Server: Apache/2.0.54 (Unix)


      [3] => Last-Modified: Sun, 09 Dec 2007 13:42:52 GMT


      [4] => ETag: "86f1a9-4b613-a7f8ef00"


      [5] => Accept-Ranges: bytes


      [6] => X-Powered-By: mod_xlayout_jh/0.0.1vhs.markII.remix


      [7] => Cache-Control: max-age=60


      [8] => Expires: Sun, 09 Dec 2007 13:44:55 GMT


      [9] => Vary: Accept-Encoding


      [10] => Content-Type: text/html


      [11] => Age: 58


      [12] => X-Cache: HIT from xa-174.sina.com.cn


      [13] => Connection: close


)


Array


(


      [0] => HTTP/1.0 200 OK


      [Date] => Sun, 09 Dec 2007 13:47:44 GMT


      [Server] => Apache/2.0.54 (Unix)


      [Last-Modified] => Sun, 09 Dec 2007 13:42:52 GMT


      [ETag] => "86f1a9-4b613-a7f8ef00"


      [Accept-Ranges] => bytes


      [X-Powered-By] => mod_xlayout_jh/0.0.1vhs.markII.remix


      [Cache-Control] => max-age=60


      [Expires] => Sun, 09 Dec 2007 13:48:44 GMT


      [Vary] => Accept-Encoding


      [Content-Type] => text/html


      [X-Cache] => MISS from xa-172.sina.com.cn


      [Connection] => close


)

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