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<?php |
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/** |
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* (c) itmedia.by <[email protected]> |
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*/ |
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namespace Submarine\NbrbExchangeRatesBundle\Client; |
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use GuzzleHttp\Client; |
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class ApiClient |
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{ |
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const CACHE_KEY = 'nbrb-xml-cache'; |
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/** |
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* Получение официального курса белорусского рубля по отношению к иностранным валютам на определенную дату |
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* |
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* @var string |
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*/ |
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private $urlExchangeRates = 'http://www.nbrb.by/Services/XmlExRates.aspx'; |
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/** |
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* Получение динамики официального курса белорусского рубля по отношению к заданной иностранной валюте, |
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* устанавливаемого Национальным банком Республики Беларусь (не более чем за 365 дней): |
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* |
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* @var string |
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*/ |
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private $urlExchangeRatesDynamic = 'http://www.nbrb.by/Services/XmlExRatesDyn.aspx'; |
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/** |
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* @var Client |
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*/ |
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private $client; |
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/** |
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* @var int |
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*/ |
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private $httpConnectTimeout; |
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/** |
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* @var int |
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*/ |
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private $httpTimeout; |
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/** |
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* ApiClient constructor. |
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* @param string $urlExchangeRates |
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* @param string $urlExchangeRatesDynamic |
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* @param int $httpConnectTimeout |
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* @param int $httpTimeout |
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*/ |
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public function __construct($urlExchangeRates, $urlExchangeRatesDynamic, $httpConnectTimeout, $httpTimeout) |
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{ |
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$this->urlExchangeRates = $urlExchangeRates; |
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$this->urlExchangeRatesDynamic = $urlExchangeRatesDynamic; |
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$this->httpConnectTimeout = $httpConnectTimeout; |
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$this->httpTimeout = $httpTimeout; |
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} |
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/** |
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* @return Client |
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*/ |
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public function getClient() |
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{ |
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if (!$this->client) { |
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$this->client = new Client(); |
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} |
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return $this->client; |
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} |
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/** |
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* Курсы валют за дату |
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* |
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* @param \DateTime $date |
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* @param bool $quotName |
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* |
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* @return string |
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*/ |
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public function getXmlExchangesRates(\DateTime $date, $quotName = true) |
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{ |
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$query = [ |
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'ondate' => $date->format('m/d/Y') |
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]; |
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if ($quotName === true) { |
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$query['mode'] = 1; |
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} |
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return $this->getResponseBody($this->urlExchangeRates, $query); |
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} |
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/** |
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* Динамика курса |
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* |
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* @param $currencyId |
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* @param \DateTime $firstDate |
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* @param \DateTime $lastDate |
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* |
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* @return string |
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*/ |
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public function getXmlExchangesRatesDynamic($currencyId, \DateTime $firstDate, \DateTime $lastDate) |
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{ |
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$query = [ |
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'curId' => $currencyId, |
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'fromDate' => $firstDate->format('m/d/Y'), |
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'toDate' => $lastDate->format('m/d/Y'), |
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]; |
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return $this->getResponseBody($this->urlExchangeRatesDynamic, $query); |
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} |
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/** |
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* Возвращает XML документ |
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* @param $url |
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* @param $query |
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* @return string |
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*/ |
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private function getResponseBody($url, $query) |
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{ |
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$options['query'] = $query; |
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$options['connect_timeout'] = $this->httpConnectTimeout; |
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$options['timeout'] = $this->httpTimeout; |
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$response = $this->getClient()->get($url, $options); |
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return $response->getBody()->read($response->getBody()->getSize()); |
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} |
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} |
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.