Php получить значение header

get_headers

get_headers() возвращает массив с заголовками из ответа сервера на HTTP-запрос.

Список параметров

Если необязательный параметр format установлен в ненулевое значение, get_headers() разберет ответ сервера и установит ключи для возвращаемого массива.

Возвращаемые значения

Возвращает список или ассоциативный массив с заголовками ответа при нормальном завершении и FALSE , если возникла ошибка.

Список изменений

Версия	Описание
5.1.3	Эта функция теперь использует stream context по умолчанию, который может быть установлен или изменен при помощи функции stream_context_set_default() .

Примеры

Пример #1 Пример использования get_headers()

print_r ( get_headers ( $url ));

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

Результатом выполнения данного примера будет что-то подобное:

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 )

Пример #2 Пример использования запроса HEAD в функции get_headers()

// По умолчанию функция get_headers использует GET-запрос для получения заголовков. Если
// вы хотите вместо него отправить HEAD-запрос, то это можно сделать следующим образом, используя stream context:
stream_context_set_default (
array(
‘http’ => array(
‘method’ => ‘HEAD’
)
)
);
$headers = get_headers ( ‘http://example.com’ );
?>

Смотрите также

Источник

getallheaders

Эта функция является псевдонимом функции apache_request_headers() . Пожалуйста, обратитесь к описанию функции apache_request_headers() для получения детальной информации о её работе.

Список параметров

У этой функции нет параметров.

Возвращаемые значения

Ассоциативный массив, содержащий все HTTP-заголовки для данного запроса или false в случае возникновения ошибок.

Список изменений

Версия	Описание
7.3.0	Эта функция стала доступна в SAPI FPM.

Примеры

Пример #1 Пример использования getallheaders()

foreach ( getallheaders () as $name => $value ) echo » $name : $value \n» ;
>

Смотрите также

User Contributed Notes 9 notes

it could be useful if you using nginx instead of apache

if (! function_exists ( ‘getallheaders’ ))
<
function getallheaders ()
<
$headers = [];
foreach ( $_SERVER as $name => $value )
<
if ( substr ( $name , 0 , 5 ) == ‘HTTP_’ )
<
$headers [ str_replace ( ‘ ‘ , ‘-‘ , ucwords ( strtolower ( str_replace ( ‘_’ , ‘ ‘ , substr ( $name , 5 )))))] = $value ;
>
>
return $headers ;
>
>
?>

A simple approach to dealing with case insenstive headers (as per RFC2616) is via the built in array_change_key_case() function:

$headers = array_change_key_case(getallheaders(), CASE_LOWER);

There’s a polyfill for this that can be downloaded or installed via composer:

Beware that RFC2616 (HTTP/1.1) defines header fields as case-insensitive entities. Therefore, array keys of getallheaders() should be converted first to lower- or uppercase and processed such.

dont forget to add the content_type and content_lenght if your are uploading file:

function emu_getallheaders () <
foreach ( $_SERVER as $name => $value )
<
if ( substr ( $name , 0 , 5 ) == ‘HTTP_’ )
<
$name = str_replace ( ‘ ‘ , ‘-‘ , ucwords ( strtolower ( str_replace ( ‘_’ , ‘ ‘ , substr ( $name , 5 )))));
$headers [ $name ] = $value ;
> else if ( $name == «CONTENT_TYPE» ) <
$headers [ «Content-Type» ] = $value ;
> else if ( $name == «CONTENT_LENGTH» ) <
$headers [ «Content-Length» ] = $value ;
>
>
return $headers ;
>
?>

chears magno c. heck

apache_request_headers replicement for nginx

if (! function_exists ( ‘apache_request_headers’ )) <
function apache_request_headers () <
foreach( $_SERVER as $key => $value ) <
if ( substr ( $key , 0 , 5 )== «HTTP_» ) <
$key = str_replace ( » » , «-» , ucwords ( strtolower ( str_replace ( «_» , » » , substr ( $key , 5 )))));
$out [ $key ]= $value ;
>else <
$out [ $key ]= $value ;
>
>
return $out ;
>
>
?>

warning, at least on php-fpm 8.2.1 and nginx, getallheaders() will return «Content-Length» and «Content-Type» both containing emptystring, even for requests without any of these 2 headers. you can do something like

retrieve token from header:

function getAuthorizationHeader () $headers = null ;
if (isset( $_SERVER [ ‘Authorization’ ])) $headers = trim ( $_SERVER [ «Authorization» ]);
>
elseif (isset( $_SERVER [ ‘HTTP_AUTHORIZATION’ ])) $headers = trim ( $_SERVER [ «HTTP_AUTHORIZATION» ]);
>
elseif ( function_exists ( ‘apache_request_headers’ )) $requestHeaders = apache_request_headers ();
$requestHeaders = array_combine ( array_map ( ‘ucwords’ , array_keys ( $requestHeaders )), array_values ( $requestHeaders ));

if (isset( $requestHeaders [ ‘Authorization’ ])) $headers = trim ( $requestHeaders [ ‘Authorization’ ]);
>
>

function getBearerToken () $headers = getAuthorizationHeader ();

if (!empty( $headers )) if ( preg_match ( ‘/Bearer\s(\S+)/’ , $headers , $matches )) return $matches [ 1 ];
>
>

Due to the else part.
>else <
$out[$key]=$value;
All server Variables are added to the headers list, and that’s not the desired outcome.

• Функции Apache
  • apache_​child_​terminate
  • apache_​get_​modules
  • apache_​get_​version
  • apache_​getenv
  • apache_​lookup_​uri
  • apache_​note
  • apache_​request_​headers
  • apache_​response_​headers
  • apache_​setenv
  • getallheaders
  • virtual

  Источник

  How to Read Request Headers in PHP

  When typing a URL in the browser’s address bar and trying to access it, an HTTP request is sent to the server by the browser. It encompasses information in a text-record state including the type, the capabilities, user’s operation system, the browser generating the request, and more.

  Getting the request header, the web server sends an HTTP response head to the client.

  Below, we will show you how to read any request header in PHP.

  Using the getallheaders() Function

  To achieve what was described above, you can use the getllheaders() function.

  Let’s check out an example with its output:

   foreach (getallheaders() as $name => $value) < echo "$name: $value 
  "; > ?>

  Host: 127.0.0.3:2025 Connection: keep-alive Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36 Accept: text/html, application/xhtml+xml, application/xml;q=0.9, image/webp, image/apng, */*;q=0.8 Accept-Encoding: gzip, deflate, br Accept-Language: en-US, en;q=0.9

  Using apache_request_headers() Function

  Now, let’s check out an example of using another helpful method that is the apache_request_headers() function:

   $header = apache_request_headers(); foreach ($header as $headers => $value) < echo "$headers: $value 
  \n"; > ?>

  The output will look as follows:

  Host: 127.0.0.6:2027 Connection: keep-alive Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36 Accept: text/html, application/xhtml+xml, application/xml;q=0.9, image/webp, image/apng, */*;q=0.8 Accept-Encoding: gzip, deflate, br Accept-Language: en-US, en;q=0.9

  Describing HTTP Headers

  An HTTP header is considered a code, which transfers the data between the browser and the web server.

  Generally, HTTP headers are used for the communication between the client and the server in both of the directions.

  Источник

  get_headers

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

  Parameters

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

  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

  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

  // 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’ );
  ?>

  See Also

  Источник

  Читайте также:  Php приведение типов float