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<?php |
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namespace Moip\Resource; |
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use JsonSerializable; |
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use Moip\Exceptions; |
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use Moip\Helper\Filters; |
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use Moip\Helper\Links; |
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use Moip\Helper\Pagination; |
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use Moip\Moip; |
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use Requests; |
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use Requests_Exception; |
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use stdClass; |
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/** |
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* Class MoipResource. |
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*/ |
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abstract class MoipResource implements JsonSerializable |
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{ |
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/** |
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* Version of API. |
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* |
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* @const string |
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*/ |
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const VERSION = 'v2'; |
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/** |
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* @var \Moip\Moip |
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*/ |
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protected $moip; |
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/** |
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* @var \stdClass |
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*/ |
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protected $data; |
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/** |
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* Initialize a new instance. |
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*/ |
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abstract protected function initialize(); |
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/** |
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* Mount information of a determined object. |
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* |
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* @param \stdClass $response |
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* |
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* @return mixed |
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*/ |
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abstract protected function populate(stdClass $response); |
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/** |
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* Create a new instance. |
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* |
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* @param \Moip\Moip $moip |
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*/ |
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public function __construct(Moip $moip) |
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{ |
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$this->moip = $moip; |
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$this->data = new stdClass(); |
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$this->initialize(); |
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} |
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/** |
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* Get a key of an object if it exists. |
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* |
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* @param string $key |
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* @param \stdClass|null $data |
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* |
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* @return mixed |
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*/ |
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protected function getIfSet($key, stdClass $data = null) |
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{ |
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if (empty($data)) { |
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$data = $this->data; |
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} |
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if (isset($data->$key)) { |
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return $data->$key; |
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} |
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} |
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/** |
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* @return \Moip\Helper\Links |
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*/ |
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public function getLinks() |
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{ |
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$links = $this->getIfSet('_links'); |
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if ($links !== null) { |
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return new Links($links); |
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} |
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} |
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/** |
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* @param $key |
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* @param $fmt |
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* @param stdClass|null $data |
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* |
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* @return bool|\DateTime|null |
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*/ |
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protected function getIfSetDateFmt($key, $fmt, stdClass $data = null) |
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{ |
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$val = $this->getIfSet($key, $data); |
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if (!empty($val)) { |
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$dt = \DateTime::createFromFormat($fmt, $val); |
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return $dt ? $dt : null; |
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} |
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} |
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/** |
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* Get a key, representing a date (Y-m-d), of an object if it exists. |
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* |
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* @param string $key |
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* @param stdClass|null $data |
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* |
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* @return \DateTime|null |
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*/ |
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protected function getIfSetDate($key, stdClass $data = null) |
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{ |
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return $this->getIfSetDateFmt($key, 'Y-m-d', $data); |
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} |
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/** |
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* Get a key representing a datetime (\Datetime::ATOM), of an object if it exists. |
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* |
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* @param string $key |
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* @param stdClass|null $data |
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* |
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* @return \DateTime|null |
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*/ |
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protected function getIfSetDateTime($key, stdClass $data = null) |
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{ |
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$rawDateTime = $this->getIfSet($key, $data); |
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if (!empty($rawDateTime)) { |
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$dateTime = new \DateTime($rawDateTime); |
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} |
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return $dateTime; |
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} |
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/** |
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* Specify data which should be serialized to JSON. |
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* |
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* @return \stdClass |
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*/ |
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public function jsonSerialize() |
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{ |
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return $this->data; |
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} |
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/** |
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* Generate URL to request. |
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* |
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* @param $action |
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* @param $id |
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* |
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* @return string |
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*/ |
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public function generatePath($action, $id = null) |
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{ |
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if (!is_null($id)) { |
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return sprintf('%s/%s/%s/%s', self::VERSION, static::PATH, $action, $id); |
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} |
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return sprintf('%s/%s/%s', self::VERSION, static::PATH, $action); |
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} |
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/** |
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* Generate URL to request a get list. |
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* |
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* @param Pagination $pagination |
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* @param Filters $filters |
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* @param string $qParam Query a specific value. |
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* |
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* @return string |
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*/ |
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public function generateListPath(Pagination $pagination = null, Filters $filters = null, $qParam = '') |
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{ |
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$queryParams = []; |
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if (!is_null($pagination)) { |
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if ($pagination->getLimit() != 0) { |
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$queryParams['limit'] = $pagination->getLimit(); |
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} |
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if ($pagination->getOffset() >= 0) { |
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$queryParams['offset'] = $pagination->getOffset(); |
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} |
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} |
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if (!is_null($filters)) { |
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$queryParams['filters'] = $filters->__toString(); |
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} |
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if (!empty($qParam)) { |
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$queryParams['q'] = $qParam; |
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} |
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return sprintf('/%s/%s?%s', self::VERSION, static::PATH, http_build_query($queryParams)); |
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} |
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/** |
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* Execute a http request. If payload == null no body will be sent. Empty body ('{}') is supported by sending a |
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* empty stdClass. |
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* |
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* @param string $path |
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* @param string $method |
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* @param mixed|null $payload |
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* |
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* @throws Exceptions\ValidationException if the API returns a 4xx http status code. Usually means invalid data was sent. |
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* @throws Exceptions\UnautorizedException if the API returns a 401 http status code. Check API token and key. |
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* @throws Exceptions\UnexpectedException if the API returns a 500 http status code or something unexpected happens (ie.: Network error). |
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* |
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* @return stdClass |
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*/ |
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protected function httpRequest($path, $method, $payload = null) |
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{ |
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$http_sess = $this->moip->getSession(); |
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$headers = []; |
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$body = null; |
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if ($payload !== null) { |
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$body = json_encode($payload, JSON_UNESCAPED_SLASHES); |
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if ($body) {// if it's json serializable |
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$headers['Content-Type'] = 'application/json'; |
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} else { |
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$body = null; |
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} |
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} |
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try { |
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$http_response = $http_sess->request($path, $headers, $body, $method); |
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} catch (Requests_Exception $e) { |
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throw new Exceptions\UnexpectedException($e); |
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} |
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$code = $http_response->status_code; |
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$response_body = $http_response->body; |
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if ($code >= 200 && $code < 300) { |
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return json_decode($response_body); |
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} elseif ($code == 401) { |
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throw new Exceptions\UnautorizedException(); |
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} elseif ($code >= 400 && $code <= 499) { |
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$errors = Exceptions\Error::parseErrors($response_body); |
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throw new Exceptions\ValidationException($code, $errors); |
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} |
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throw new Exceptions\UnexpectedException(); |
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} |
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/** |
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* Find by path. |
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* |
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* @param string $path |
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* |
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* @return stdClass |
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*/ |
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public function getByPath($path) |
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{ |
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$response = $this->httpRequest($path, Requests::GET); |
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return $this->populate($response); |
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} |
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/** |
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* Create a new item in Moip. |
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* |
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* @param string $path |
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* |
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* @return stdClass |
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*/ |
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public function createResource($path) |
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{ |
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$response = $this->httpRequest($path, Requests::POST, $this); |
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return $this->populate($response); |
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} |
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/** |
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* Delete a new item in Moip. |
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* |
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* @param $path |
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* |
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* @return mixed |
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*/ |
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public function deleteByPath($path) |
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{ |
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return $this->httpRequest($path, Requests::DELETE); |
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} |
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} |
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If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: