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<?php
namespace Phly\Http;
use Psr\Http\Message\RequestInterface;
/**
* HTTP Request encapsulation
*
* Requests are considered immutable; all methods that might change state are
* implemented such that they retain the internal state of the current
* message and return a new instance that contains the changed state.
*/
class Request implements RequestInterface
{
use MessageTrait, RequestTrait;
/**
* @param null|string $uri URI for the request, if any.
* @param null|string $method HTTP method for the request, if any.
* @param string|resource|StreamableInterface $body Message body, if any.
* @param array $headers Headers for the message, if any.
* @throws InvalidArgumentException for any invalid value.
*/
public function __construct($uri = null, $method = null, $body = 'php://memory', array $headers = [])
{
$this->initialize($uri, $method, $body, $headers);
}
/**
* Extends MessageInterface::getHeaders() to provide request-specific
* behavior.
*
* Retrieves all message headers.
*
* This method acts exactly like MessageInterface::getHeaders(), with one
* behavioral change: if the Host header has not been previously set, the
* method MUST attempt to pull the host segment of the composed URI, if
* present.
*
* @see MessageInterface::getHeaders()
* @see UriInterface::getHost()
* @return array Returns an associative array of the message's headers. Each
* key MUST be a header name, and each value MUST be an array of strings.
*/
public function getHeaders()
{
$headers = $this->headers;
if (! $this->hasHeader('host')
&& ($this->uri && $this->uri->getHost())
) {
$headers['Host'] = [$this->getHostFromUri()];
}
return $headers;
}
/**
* Extends MessageInterface::getHeaderLines() to provide request-specific
* behavior.
*
* Retrieves a header by the given case-insensitive name as an array of strings.
*
* This method acts exactly like MessageInterface::getHeaderLines(), with
* one behavioral change: if the Host header is requested, but has
* not been previously set, the method MUST attempt to pull the host
* segment of the composed URI, if present.
*
* @see MessageInterface::getHeaderLines()
* @see UriInterface::getHost()
* @param string $name Case-insensitive header field name.
* @return string[]
*/
public function getHeaderLines($header)
{
if (! $this->hasHeader($header)) {
if (strtolower($header) === 'host'
&& ($this->uri && $this->uri->getHost())
) {
return [$this->getHostFromUri()];
}
return [];
}
$header = $this->headerNames[strtolower($header)];
$value = $this->headers[$header];
$value = is_array($value) ? $value : [$value];
return $value;
}
}