Php read all request headers

How to Read Request Headers in PHP

PHP manual on : http://php.net/manual/en/reserved.variables.server.php Solution 4: Since PHP 5.4.0 you can use function which returns all request headers as an associative array: Earlier this function worked only when PHP was running as an Apache/nsapi module. Generally, HTTP headers are used for the communication between the client and the server in both of the directions.

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.

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.

Headers in laravel Code Example, // Returns header value with default as fallback $request->header(‘some_header’, ‘default_value’); // Returns boolean $request->headers->has(‘some_header’);

How do I read any request header in PHP

For example the custom header: X-Requested-With .

IF : you only need a single header, instead of all headers, the quickest method is:

ELSE IF : you run PHP as an Apache module or, as of PHP 5.4, using FastCGI (simple method):

ELSE: In any other case, you can use (userland implementation):

 $value) < if (substr($key, 0, 5) <>'HTTP_') < continue; >$header = str_replace(' ', '-', ucwords(str_replace('_', ' ', strtolower(substr($key, 5))))); $headers[$header] = $value; > return $headers; > $headers = getRequestHeaders(); foreach ($headers as $header => $value) < echo "$header: $value 
\n"; > 

See Also :
getallheaders() — (PHP >= 5.4) cross platform edition Alias of apache_request_headers() apache_response_headers() — Fetch all HTTP response headers.
headers_list() — Fetch a list of headers to be sent.

$_SERVER['HTTP_X_REQUESTED_WITH'] 

Meta-variables with names beginning with HTTP_ contain values read from the client request header fields, if the protocol used is HTTP. The HTTP header field name is converted to upper case, has all occurrences of — replaced with _ and has HTTP_ prepended to give the meta-variable name.

You should find all HTTP headers in the $_SERVER global variable prefixed with HTTP_ uppercased and with dashes (-) replaced by underscores (_).

For instance your X-Requested-With can be found in:

$_SERVER['HTTP_X_REQUESTED_WITH'] 

It might be convenient to create an associative array from the $_SERVER variable. This can be done in several styles, but here’s a function that outputs camelcased keys:

$headers = array(); foreach ($_SERVER as $key => $value) < if (strpos($key, 'HTTP_') === 0) < $headers[str_replace(' ', '', ucwords(str_replace('_', ' ', strtolower(substr($key, 5)))))] = $value; >> 

Now just use $headers[‘XRequestedWith’] to retrieve the desired header.

PHP manual on $_SERVER : http://php.net/manual/en/reserved.variables.server.php

Since PHP 5.4.0 you can use getallheaders function which returns all request headers as an associative array:

var_dump(getallheaders()); // array(8) < // ["Accept"]=>// string(63) "text/html[. ]" // ["Accept-Charset"]=> // string(31) "ISSO-8859-1[. ]" // ["Accept-Encoding"]=> // string(17) "gzip,deflate,sdch" // ["Accept-Language"]=> // string(14) "en-US,en;q=0.8" // ["Cache-Control"]=> // string(9) "max-age=0" // ["Connection"]=> // string(10) "keep-alive" // ["Host"]=> // string(9) "localhost" // ["User-Agent"]=> // string(108) "Mozilla/5.0 (Windows NT 6.1; WOW64) [. ]" // > 

Earlier this function worked only when PHP was running as an Apache/nsapi module.

Php — Get Header Authorization key in laravel controller?, Trying to get the header authorization key in controller for making an API. Request is making from fiddler. $headers = apache_request_headers (); And the $header …

Laravel 5 / Lumen Request Header?

So I am not really sure how to go about this I have tried a few things and I will list one below however what I am trying to do is store information sent in a http request in a php variable.

Here is a view from Chrome Postman of me sending the request I want ot send. Note «pubapi» is a «header».

I have been messing around with Lumen requests as you can see documented here ( http://lumen.laravel.com/docs/requests ) and have tried using the following below to possibly display them but its not working obviously.

I am putting this in my controller and I have .

use Illuminate\Http\Request; 

So how could I say store the header I am sending «pubapi» into a php variable in my controller?

Not sure if this will help, however looking at the Laravel frameworks docs I see this http://laravel.com/api/5.0/Illuminate/Http/Request.html#method_header trying this throws the same error in my code. So for example I tried the following and reached the same error.

You misunderstand the Laravel request object on two levels.

First, the error you are getting is because you were referencing the object instead of the Facade. Facades have a way of forwarding static method calls to non-static methods.

Second, you are sending the value as a header but are trying to access the request parameters. This will never give you what you want.

Here is a simple way to see an example of what you want by creating a test route like so:

Route::match(['get','post'], '/test', function (Illuminate\Http\Request $request) < dd($request->headers->all()); >); 

Post to this route and you will see your headers, one of which will be pubapi . Pay attention that the route method definition matches how you are submitting the request (ie GET or POST).

Let’s apply this to the controller, ArticleController:

header('pubapi'); // string $headers = $request->headers->all(); // array /* $pubapi === $headers['pubapi'] */ > > 

Try to change the Illuminate\Http\Request to Request .

- use Illuminate\Http\Request; + use Request; 

echo app('request')->header('pubapi'); 

Seemed to work perfect. Could someone provide additional explanation to why this worked and my original method didn’t?

Actually you are calling it statically, that’s why it is not getting appropriate Request class and throwing error, can do as follows

use Illuminate\Http\Request; //inside your controller class YourClass extends Controller< public function yourFunction(Request $request)< //for getting all the request dd($request->all()); //for getting header content dd($request->header('pubapi')); > > 

Cors — Adding Access-Control-Allow-Origin header, I’m new to Laravel and am doing some Laravel 5.3 Passport project with OAuth2.0 password grant. When I curl the API with the params it responds with token. …

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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.

• Apache Functions
  • 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

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