vendor/zendframework/zend-diactoros/src/Request.php

   1 <?php
   2 /**
   3  * @see       https://github.com/zendframework/zend-diactoros for the canonical source repository
   4  * @copyright Copyright (c) 2015-2017 Zend Technologies USA Inc. (http://www.zend.com)
   5  * @license   https://github.com/zendframework/zend-diactoros/blob/master/LICENSE.md New BSD License
   6  */
   7
   8 namespace Zend\Diactoros;
   9
  10 use Psr\Http\Message\RequestInterface;
  11 use Psr\Http\Message\StreamInterface;
  12 use Psr\Http\Message\UriInterface;
  13
  14 use function strtolower;
  15
  16 /**
  17  * HTTP Request encapsulation
  18  *
  19  * Requests are considered immutable; all methods that might change state are
  20  * implemented such that they retain the internal state of the current
  21  * message and return a new instance that contains the changed state.
  22  */
  23 class Request implements RequestInterface
  24 {
  25     use RequestTrait;
  26
  27     /**
  28      * @param null|string|UriInterface $uri URI for the request, if any.
  29      * @param null|string $method HTTP method for the request, if any.
  30      * @param string|resource|StreamInterface $body Message body, if any.
  31      * @param array $headers Headers for the message, if any.
  32      * @throws \InvalidArgumentException for any invalid value.
  33      */
  34     public function __construct($uri = null, $method = null, $body = 'php://temp', array $headers = [])
  35     {
  36         $this->initialize($uri, $method, $body, $headers);
  37     }
  38
  39     /**
  40      * {@inheritdoc}
  41      */
  42     public function getHeaders()
  43     {
  44         $headers = $this->headers;
  45         if (! $this->hasHeader('host')
  46             && $this->uri->getHost()
  47         ) {
  48             $headers['Host'] = [$this->getHostFromUri()];
  49         }
  50
  51         return $headers;
  52     }
  53
  54     /**
  55      * {@inheritdoc}
  56      */
  57     public function getHeader($header)
  58     {
  59         if (! $this->hasHeader($header)) {
  60             if (strtolower($header) === 'host'
  61                 && $this->uri->getHost()
  62             ) {
  63                 return [$this->getHostFromUri()];
  64             }
  65
  66             return [];
  67         }
  68
  69         $header = $this->headerNames[strtolower($header)];
  70
  71         return $this->headers[$header];
  72     }
  73 }