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 contains an array.

Array
(
    [User-Agent] => Fiddler
    [Host] => localhost:8000
    [Content-Length] => 102
    [Authorization] => TestKey
)

If am trying like this to fetch the Authorization , its throwing error.

$header['Authorization]

Error :

Undefined index: Authorization

Tried many ways to get the authorization, but not working anything. Is there any way to fetch this?

To get headers from the request you should use the Request class

public function yourControllerFunction(\Illuminate\Http\Request $request)
{
    $header = $request->header('Authorization');

    // do some stuff
}

See https://laravel.com/api/5.5/Illuminate/Http/Request.html#method_header

Though it's an old topic, it might be useful for somebody...
In new Laravel versions, it's possible to get bearer Authorization token directly by calling Illuminate\Http\Request's bearerToken() method:

Auth::viaRequest('costom-token', function (Request $request) {
    $token = $request->bearerToken();
    // ...
});

Or directly from a controller:

public function index(Request $request) {
    Log::info($request->bearerToken());
    // ...
}

If you use a specific package like "JWT" or "sanctum" you can use their own middleware to retrieve user information.

Also, Laravel provides many ways to get the authorization key like :

• $request->bearerToken(); to get only token without 'Bearer' word the result will be like 44|9rJp2TWvTTpWy535S1Rq2DF0AEmYbEotwydkYCZ3.
• $request->header('Authorization'); to get the full key like Bearer 44|9rJp2TWvTTpWy535S1Rq2DF0AEmYbEotwydkYCZ3

P.S. you can use request() shortcut instead of using $request variable

You can try install the jwt(JSON Web Token Authentication for Laravel & Lumen) http://jwt-auth.com via composer.

And create a middleware that verify if exists yours token key in the header request.

After to install jwt, Your middleware it could be as follows

<?php

namespace App\Http\Middleware;

use Closure;
use JWTAuth;
use Tymon\JWTAuth\Exceptions\JWTException;
use Tymon\JWTAuth\Exceptions\TokenExpiredException;
use Tymon\JWTAuth\Exceptions\TokenInvalidException;

class VerifyJWTToken
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        try {
            $user = JWTAuth::toUser($request->header('token'));
            
        } catch (JWTException $e) {
            if ($e instanceof TokenExpiredException) {
                return response()->json([
                    'error' => 'token_expired',
                    'code' => $e->getStatusCode()
                ], $e->getStatusCode());
            } 
            else if($e instanceof TokenInvalidException){
                return response()->json([
                    'error' => "token_invalid",
                    'code' => $e->getStatusCode()
                ], $e->getStatusCode());
            } 
            else {
                return response()->json([
                    'error' => 'Token is required',
                    'code' => $e->getStatusCode(),
                    
                ], $e->getStatusCode());
            }
        }
        
        return $next($request);
    }
}

I used token for example for a header key, but you can name it, as you like.

Then you could use this on any controller

There is a simple way to get headers in any file or controller with $_SERVER.

print_r($_SERVER); // check your header here

then, you can simply get your header:

$AuthToken = $_SERVER['HTTP_AUTHORIZATION'];