get_headers in PHP

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

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

get_headers() returns an array with the headers sent by the server in response to a HTTP request.

Parameters:

url-The target URL.format

If the optional format parameter is set to non-zero, get_headers() parses the response and sets the array's keys.

Return Values:Returns an indexed or associative array with the headers, or FALSE on failure.

Changelog:
Version         Description

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

print_r(get_headers($url));

print_r(get_headers($url, 1));
?>


O/P:
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');
?>