1 <?php
 2 
 3 namespace Http\Message\Authentication;
 4 
 5 use Http\Message\Authentication;
 6 use Psr\Http\Message\RequestInterface;
 7 
 8 /**
 9  * Authenticate a PSR-7 Request using a token.
10  *
11  * @author Márk Sági-Kazár <mark.sagikazar@gmail.com>
12  */
13 final class Bearer implements Authentication
14 {
15     /**
16      * @var string
17      */
18     private $token;
19 
20     /**
21      * @param string $token
22      */
23     public function __construct($token)
24     {
25         $this->token = $token;
26     }
27 
28     /**
29      * {@inheritdoc}
30      */
31     public function authenticate(RequestInterface $request)
32     {
33         $header = sprintf('Bearer %s', $this->token);
34 
35         return $request->withHeader('Authorization', $header);
36     }
37 }
38 

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