(PHP 5)
get_headers — Fetches all the headers sent by the server in response to a HTTP request
$url
[, int $format = 0
] )get_headers() returns an array with the headers sent by the server in response to a HTTP request.
urlThe target URL.
format
If the optional format parameter is set to non-zero,
get_headers() parses the response and sets the
array's keys.
Returns an indexed or associative array with the headers, or FALSE on
failure.
| Versione | Descrizione |
|---|---|
| 5.1.3 | This function now uses the default stream context, which can be set/changed with the stream_context_set_default() function. |
Example #1 get_headers() example
<?php
$url = 'http://www.example.com';
print_r(get_headers($url));
print_r(get_headers($url, 1));
?>
Il precedente esempio visualizzerà qualcosa simile a:
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');
?>