get_headers

(PHP 5, PHP 7)

get_headers — 取锟矫凤拷锟斤拷锟斤拷锟斤拷应一锟斤拷 HTTP 锟斤拷锟斤拷锟斤拷锟斤拷锟酵碉拷锟斤拷锟叫憋拷头

说锟斤拷

get_headers ( string $url [, int $format = 0 ] ) : array

get_headers() 锟斤拷锟斤拷一锟斤拷锟斤拷锟介，锟斤拷锟斤拷锟叫凤拷锟斤拷锟斤拷锟斤拷应一锟斤拷 HTTP 锟斤拷锟斤拷锟斤拷锟斤拷锟酵的憋拷头锟斤拷

锟斤拷锟斤拷

url

目锟斤拷 URL锟斤拷

format

锟斤拷锟斤拷锟斤拷锟窖★拷锟� format 锟斤拷锟斤拷锟斤拷为 1锟斤拷锟斤拷 get_headers() 锟斤拷锟斤拷锟斤拷锟接︼拷锟斤拷锟较拷锟斤拷瓒拷锟斤拷锟侥硷拷锟斤拷锟斤拷

锟斤拷锟斤拷值

锟斤拷锟截帮拷锟斤拷锟叫凤拷锟斤拷锟斤拷锟斤拷应一锟斤拷 HTTP 锟斤拷锟斤拷锟斤拷锟斤拷锟酵憋拷头锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷椋拷锟斤拷失锟斤拷锟津返伙拷 FALSE锟斤拷

锟斤拷锟斤拷锟斤拷志

锟芥本 说锟斤拷
5.1.3 锟斤拷 PHP 5.1.3 锟金本猴拷锟斤拷使锟斤拷默锟较碉拷锟斤拷锟斤拷锟斤拷锟侥ｏ拷锟斤拷锟斤拷锟斤拷锟� stream_context_get_default() 锟斤拷锟斤拷锟借定锟斤拷锟睫改★拷

锟斤拷锟斤拷

Example #1 get_headers() 锟斤拷锟斤拷

<?php
$url = 'http://www.example.com';

print_r(get_headers($url));

print_r(get_headers($url, 1));
?>

锟斤拷锟斤拷锟斤拷锟教碉拷锟斤拷锟斤拷锟斤拷锟斤拷冢锟�

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
)

Example #2 get_headers() using HEAD example

<?php
// By default get_headers uses a GET request to fetch the headers. If you
// want to send a HEAD request instead, you can do so using a stream context:
stream_context_set_default(
    array(
        'http' => array(
            'method' => 'HEAD'
        )
    )
);
$headers = get_headers('http://example.com');
?>

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