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<?php |
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/** |
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* This file is part of the Teazee package. |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @license MIT License |
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*/ |
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namespace Teazee\Provider; |
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use Http\Client\HttpClient; |
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use Http\Message\MessageFactory; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\UriInterface; |
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use Teazee\Exception\ServiceMissingException; |
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/** |
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* @author Michael Crumm <[email protected]> |
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*/ |
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abstract class AbstractHttpProvider extends AbstractProvider |
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{ |
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/** |
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* @var HttpClient |
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*/ |
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private $client; |
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/** |
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* @var MessageFactory |
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*/ |
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private $messageFactory; |
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/** |
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* AbstractHttpProvider Constructor. |
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* |
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* @param HttpClient $client HttpClient makes HTTP requests. |
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* @param MessageFactory $messageFactory MessageFactory creates Request objects. |
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*/ |
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public function __construct(HttpClient $client = null, MessageFactory $messageFactory = null) |
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{ |
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parent::__construct(); |
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if (null === $client and !class_exists('Http\Discovery\HttpClientDiscovery')) { |
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throw ServiceMissingException::noHttpClient(); |
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} |
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$this->client = $client ?: \Http\Discovery\HttpClientDiscovery::find(); |
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if (null === $messageFactory and !class_exists('Http\Discovery\MessageFactoryDiscovery')) { |
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throw ServiceMissingException::noMessageFactory(); |
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} |
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$this->messageFactory = $messageFactory ?: \Http\Discovery\MessageFactoryDiscovery::find(); |
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} |
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/** |
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* Returns the HttpClient instance for this Provider. |
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* |
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* @return HttpClient |
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*/ |
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public function getClient() |
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{ |
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return $this->client; |
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} |
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/** |
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* Returns a ResponseInterface for the given URI/method. |
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* |
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* @param string|UriInterface $uri Request URI. |
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* @param string $method HTTP method (Defaults to 'GET'). |
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* |
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* @return ResponseInterface |
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*/ |
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protected function getResponse($uri, $method = 'GET') |
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{ |
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$request = $this->messageFactory->createRequest($method, $uri); |
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return $this->client->sendRequest($request); |
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} |
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} |
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wyndow /
teazee
Loading history...
PHP has two types of connecting operators (logical operators, and boolean operators):
and&&or||The difference between these is the order in which they are executed. In most cases, you would want to use a boolean operator like
&&, or||.Let’s take a look at a few examples:
Logical Operators are used for Control-Flow
One case where you explicitly want to use logical operators is for control-flow such as this:
Since
dieintroduces problems of its own, f.e. it makes our code hardly testable, and prevents any kind of more sophisticated error handling; you probably do not want to use this in real-world code. Unfortunately, logical operators cannot be combined withthrowat this point:These limitations lead to logical operators rarely being of use in current PHP code.