Php show all headers

getallheaders

Функция getallheaders() является псевдонимом для функции apache_request_headers() . Эта функция возвращает ассоциативный массив, содержащий все заголовки текущего HTTP-запроса. Для получения более подробных сведений о работе этой функции обратитесь к описанию функции apache_request_headers() .

Замечание: В PHP 4.3.0 функция getallheaders() стала псевдонимом для функции apache_request_headers() . Соответствующим образом, она была переименована. Это связано с тем, что эта функция работоспособна только в том случае, если PHP был собран в качестве модуля Apache.

Array ( [Host] => htmlweb.ru [X-Forwarded-Proto] => https [Connection] => close [User-Agent] => Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36 [Accept] => text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 [Accept-Language] => ru-ru,ru;q=0.8,en-us;q=0.5,en;q=0.3 [Accept-Charset] => windows-1251,utf-8;q=0.7,*;q=0.7 [Referer] => https://htmlweb.ru/ )

Пример. Эмулятор функции getallheaders():

// Эмуляция функции getallheaders() для PHP установленного как не как модуль Apach. if (!function_exists("getallheaders")) < function getallheaders() < $ar=[]; if(isset($_SERVER['HTTP_HOST'])) $ar['Host']=$_SERVER['HTTP_HOST']; if(isset($_SERVER['HTTP_USER_AGENT'])) $ar['User-Agent']=$_SERVER['HTTP_USER_AGENT']; if(isset($_SERVER['HTTP_ACCEPT'])) $ar['Accept']=$_SERVER['HTTP_ACCEPT']; if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) $ar['Accept-Language']=$_SERVER['HTTP_ACCEPT_LANGUAGE']; if(isset($_SERVER['HTTP_ACCEPT_ENCODING'])) $ar['Accept-Encoding']=$_SERVER['HTTP_ACCEPT_ENCODING']; if(isset($_SERVER['HTTP_ACCEPT_CHARSET'])) $ar['Accept-Charset']=$_SERVER['HTTP_ACCEPT_CHARSET']; if(isset($_SERVER['HTTP_KEEP_ALIVE'])) $ar['Keep-Alive']=$_SERVER['HTTP_KEEP_ALIVE']; if(isset($_SERVER['HTTP_CONNECTION'])) $ar['Connection']=$_SERVER['HTTP_CONNECTION']; if(isset($_SERVER['HTTP_REFERER'])) $ar['Referer']=$_SERVER['HTTP_REFERER']; if(isset($_SERVER['HTTP_COOKIE'])) $ar['Cookie']=$_SERVER['HTTP_COOKIE']; if(isset($_SERVER['HTTP_IF_MODIFIED_SINCE']))$ar['If-Modified-Since']=$_SERVER['HTTP_IF_MODIFIED_SINCE']; if(isset($_SERVER['HTTP_IF_NONE_MATCH'])) $ar['If-None-Match']=$_SERVER['HTTP_IF_NONE_MATCH']; // если я какие-то параметры забыл, добавьте их сами return $ar; >// эмулируем синоним функции apache_request_headers: if (!function_exists("apache_request_headers")) < function apache_request_headers() < return getallheaders(); >>

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

  PHP getallheaders(): Get All Headers

  The PHP getallheaders() function is used when we need to fetch all HTTP request headers. For example:

  The output of the above PHP example on the getallheaders() function is:

  

  Host: localhost Connection: keep-alive Cache-Control: max-age=0 sec-ch-ua: " Not A;Brand";v="99", "Chromium";v="100", "Google Chrome";v="100" sec-ch-ua-mobile: ?0 sec-ch-ua-platform: "Windows" Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Sec-Fetch-Site: none Sec-Fetch-Mode: navigate Sec-Fetch-User: ?1 Sec-Fetch-Dest: document Accept-Encoding: gzip, deflate, br Accept-Language: en-US,en;q=0.9 Cookie: foo=bar

  The above example can also be written in this way:

   $value) echo "", $key, ": ", $value, ""; ?>

  

  You can also show the information of all HTTP headers in the form of a table using the following PHP script:

  "; echo "Name"; echo "Value"; echo ""; foreach(getallheaders() as $key => $value) < echo ""; echo "", $key, ""; echo "", $value, ""; echo ""; > echo ""; ?>

  PHP getallheaders() syntax

  The syntax of the getallheaders() function in PHP is:

  Advantages of the getallheaders() function in PHP

  • The getallheaders() function is very simple to use, and it only takes one call to retrieve all of the headers.
  • All headers sent in the current request are returned by the getallheaders() function, making it useful for applications that need to access and manipulate headers.
  • The HTTP specification has standardized the getallheaders() function, ensuring compatibility across different web servers and platforms.
  • Use getallheaders() to retrieve security-related headers such as Authorization or Cookie, allowing applications to implement appropriate security measures.

  Disadvantages of the getallheaders() function in PHP

  • The getallheaders() function can only be used with PHP versions 5 and up, and not all web servers may support it.
  • When dealing with a large number of headers, the getallheaders() function may experience performance issues because it reads every header sent in the current request.
  • Headers frequently have many components, including multiple values or various formats. These headers must be parsed carefully because errors could occur.
  • Headers could potentially contain malicious code or be used to launch attacks like injection or cross-site scripting if they are not properly validated or sanitized (XSS).

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