Главная » Языки программирования

Php read post header

Содержание
  1. get_headers
  2. Parameters
  3. Return Values
  4. Changelog
  5. Examples
  6. See Also
  7. getallheaders
  8. Parameters
  9. Return Values
  10. Changelog
  11. Examples
  12. See Also
  13. User Contributed Notes 9 notes
  14. get_headers
  15. Список параметров
  16. Возвращаемые значения
  17. Список изменений
  18. Примеры
  19. Смотрите также

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

getallheaders

This function is an alias for apache_request_headers() . Please read the apache_request_headers() documentation for more information on how this function works.

Parameters

This function has no parameters.

Return Values

An associative array of all the HTTP headers in the current request, or false on failure.

Changelog

Version Description
7.3.0 This function became available in the FPM SAPI.

Examples

Example #1 getallheaders() example

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

See Also

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.

Оцените статью
© 2024 Программирование