apache_request_headers

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

apache_request_headersCaptura todos os cabeçalhos HTTP

Descrição

array apache_request_headers ( void )

Captura todos os cabeçalhos HTTP da requisição atual.

Valor Retornado

Um array de todos os cabeçalho HTTP da requisição atual, FALSE em caso de falhas.

Changelog

Versão Descrição
5.5.7 Esta função tornou-se disponível no servidor CLI.
5.4.0 Esta função tornou-se disponível no FastCGI. Anteriormente era suportada somente quando o PHP era instalado como módulo Apache ou como um módulo NSAPI nos servidores Netscape/iPlanet/SunONE.

Exemplos

Exemplo #1 Exemplo da função apache_request_headers()

<?php
$headers 
apache_request_headers();

foreach (
$headers as $header => $value) {
    echo 
"$header$value <br />\n";
}
?>

O exemplo acima irá imprimir algo similar à:

Accept: */*
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0
Host: www.example.com
Connection: Keep-Alive

Notas

Nota:

Você também pode obter variáveis CGI comuns através da leitura do ambiente, que funcionará independente de estar utilizando o PHP como um módulo do Apache. Utilize a função phpinfo() para ver uma lista de todas as variáveis de ambiente disponíveis.

Veja Também

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User Contributed Notes 4 notes

up
11
callum85 at notspam dot msn dot com
9 years ago
There is a simple way to get request headers from Apache even on PHP running as a CGI. As far as I know, it's the only way to get the headers "If-Modified-Since" and "If-None-Match" when apache_request_headers() isn't available. You need mod_rewrite, which most web hosts seem to have enabled. Put this in an .htacess file in your web root:

RewriteEngine on
RewriteRule .* - [E=HTTP_IF_MODIFIED_SINCE:%{HTTP:If-Modified-Since}]
RewriteRule .* - [E=HTTP_IF_NONE_MATCH:%{HTTP:If-None-Match}]

The headers are then available in PHP as
<?php
  $_SERVER
['HTTP_IF_MODIFIED_SINCE'];
 
$_SERVER['HTTP_IF_NONE_MATCH'];
?>

I've tested this on PHP/5.1.6, on both Apache/2.2.3/Win32 and Apache/2.0.54/Unix, and it works perfectly.

Note: if you use RewriteRules already for clean URLs, you need to put the above rules AFTER your existing ones.
up
8
limalopex.eisfux.de
9 years ago
I didn't found a replacement for apache_request_headers() in PHP::Compat (http://pear.php.net/package/PHP_Compat) so I wrote my own:

<?php
if( !function_exists('apache_request_headers') ) {
///
function apache_request_headers() {
 
$arh = array();
 
$rx_http = '/\AHTTP_/';
  foreach(
$_SERVER as $key => $val) {
    if(
preg_match($rx_http, $key) ) {
     
$arh_key = preg_replace($rx_http, '', $key);
     
$rx_matches = array();
     
// do some nasty string manipulations to restore the original letter case
      // this should work in most cases
     
$rx_matches = explode('_', $arh_key);
      if(
count($rx_matches) > 0 and strlen($arh_key) > 2 ) {
        foreach(
$rx_matches as $ak_key => $ak_val) $rx_matches[$ak_key] = ucfirst($ak_val);
       
$arh_key = implode('-', $rx_matches);
      }
     
$arh[$arh_key] = $val;
    }
  }
  return(
$arh );
}
///
}
///
?>
up
4
egocentryk
1 year ago
Superglobal $_SERVER,  used in all patches for missing getallheaders() contains only truly basic headers.  To pass ANY header into PHP in any httpd environment, including CGI/FCGI just add rule (any number of rules) into .htaccess:

RewriteRule .* - [E=HTTP_MY_HEADER:%{HTTP:My-Header}]

and the header with it's value will appear for PHP as
<?php print $_SERVER['HTTP_MY_HEADER']; ?>

And... just couldn't hold off. Rewrtiting $_SERVER keys for replacing missing function really does not require RegExps, preg_matches or evals... Try this:
<?php
function getallheaders() {
  foreach(
$_SERVER as $K=>$V){$a=explode('_' ,$K);
      if(
array_shift($a)=='HTTP'){
          
array_walk($a,function(&$v){$v=ucfirst(strtolower($v));});
      
$retval[join('-',$a)]=$V;}
    } return
$retval; }
?>
up
-8
uli dot staerk at globalways dot net
1 year ago
A slightly modified version from  limalopex.eisfux.de. Fixes the missing Headers Content-Type and Content-Length and makes it Camel-Case.

<?php
if( !function_exists('apache_request_headers') ) {
        function
apache_request_headers() {
               
$arh = array();
               
$rx_http = '/\AHTTP_/';
                foreach(
$_SERVER as $key => $val) {
                        if(
preg_match($rx_http, $key) ) {
                               
$arh_key = preg_replace($rx_http, '', $key);
                               
$rx_matches = array();
                               
// do some nasty string manipulations to restore the original letter case
                                // this should work in most cases
                               
$rx_matches = explode('_', strtolower($arh_key));
                                if(
count($rx_matches) > 0 and strlen($arh_key) > 2 ) {
                                        foreach(
$rx_matches as $ak_key => $ak_val) $rx_matches[$ak_key] = ucfirst($ak_val);
                                       
$arh_key = implode('-', $rx_matches);
                                }
                               
$arh[$arh_key] = $val;
                        }
                }
                if(isset(
$_SERVER['CONTENT_TYPE'])) $arh['Content-Type'] = $_SERVER['CONTENT_TYPE'];
                if(isset(
$_SERVER['CONTENT_LENGTH'])) $arh['Content-Length'] = $_SERVER['CONTENT_LENGTH'];
                return(
$arh );
        }
}
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