PHP 8.3.4 Released!

getallheaders

(PHP 4, PHP 5, PHP 7, PHP 8)

getallheadersFetch all HTTP request headers

Description

getallheaders(): array

Fetches all HTTP headers from the current request.

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

<?php

foreach (getallheaders() as $name => $value) {
echo
"$name: $value\n";
}

?>

See Also

add a note

User Contributed Notes 9 notes

up
135
joyview at gmail dot com
15 years ago
it could be useful if you using nginx instead of apache

<?php
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;
}
}
?>
up
39
Anonymous
8 years ago
There's a polyfill for this that can be downloaded or installed via composer:

https://github.com/ralouphie/getallheaders
up
15
michaelmcandrew at thirdsectordesign dot org
4 years ago
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);
up
28
lorro at lorro dot hu
18 years ago
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.
up
5
acidfilez at gmail dot com
12 years ago
dont forget to add the content_type and content_lenght if your are uploading file:

<?php
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
up
-2
divinity76 at gmail dot com
1 year ago
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

<?php
$request_headers
= getallheaders();
if((
$request_headers["Content-Type"] ?? null) === "" && ($request_headers["Content-Length"] ?? null) === "") {
// probably a getallheaders() bug, not actual request headers.
unset($request_headers["Content-Type"], $request_headers["Content-Length"]);
}
?>

- might be a bug in nginx rather than php-fpm, i don't know. anyway a real request wouldn't leave them at emptystring
up
-1
majksner at gmail dot com
13 years ago
apache_request_headers replicement for nginx

<?php
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;
}
}
?>
up
-4
Dimitri
1 year ago
retrieve token from header:

<?php
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']);
}
}

return
$headers;
}

function
getBearerToken() {
$headers = getAuthorizationHeader();

if (!empty(
$headers)) {
if (
preg_match('/Bearer\s(\S+)/', $headers, $matches)) {
return
$matches[1];
}
}

return
null;
}

echo
getBearerToken();
?>
up
-12
andersmyren at hotmail dot com
4 years ago
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.
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