Fetches all the headers sent by the server in response to an HTTP request

# get_headers

(PHP 5, PHP 7, PHP 8)

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

### Description

get_headers(string `$url`, bool `$associative` = `false`, ?resource `$context` = `null`): array|false

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

### Parameters

`url`

  The target URL.

`associative`

  If the optional `associative` parameter is set to true, get_headers() parses the response and sets the array's keys.

`context`

  A valid context resource created with stream_context_create(), or `null` to use the default context.

### Return Values

Returns an indexed or associative array with the headers, or `false` on failure.

### Changelog

Version | Description
--- | ---
8.0.0 | The `associative` has been changed from int to bool.
7.1.0 | The `context` parameter was added.

### Examples

Example #1 get_headers() example

`<?php
$url = 'http://www.example.com';
print_r(get_headers($url));
print_r(get_headers($url, true));
?>`

The above example will output something similar to:

    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:
$context = stream_context_create(
[
'http' => array(
'method' => 'HEAD'
)
]
);
$headers = get_headers('http://example.com', false, $context);
?>`

### See Also

- apache_request_headers() - Fetch all HTTP request headers

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