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<?php |
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namespace POData\OperationContext\Web; |
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use POData\Common\ODataConstants; |
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use POData\HttpProcessUtility; |
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use POData\OperationContext\HTTPRequestMethod; |
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use POData\OperationContext\IHTTPRequest; |
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/** |
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* Class IncomingRequest |
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* Class represents HTTP methods,headers and stream associated with a HTTP request |
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* Note: This class will not throw any error |
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* @package POData\OperationContext\Web |
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*/ |
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class IncomingRequest implements IHTTPRequest |
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{ |
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/** |
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* The request headers |
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* |
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* @var array |
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*/ |
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private $_headers; |
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/** |
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* The incoming url in raw format |
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* |
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* @var string |
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*/ |
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private $_rawUrl = null; |
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/** |
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* The request method (GET, POST, PUT, DELETE or MERGE) |
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* |
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* @var string HttpVerb |
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*/ |
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private $_method; |
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/** |
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* The query options as key value. |
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* |
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* @var array(string, string); |
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*/ |
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private $_queryOptions; |
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/** |
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* A collection that represents mapping between query |
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* option and its count. |
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* |
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* @var array(string, int) |
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*/ |
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private $_queryOptionsCount; |
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/** |
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* Initialize a new instance of IncomingWebRequestContext |
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*/ |
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public function __construct() |
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{ |
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$this->_method = $_SERVER['REQUEST_METHOD']; |
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$this->_queryOptions = null; |
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$this->_queryOptionsCount = null; |
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$this->_headers = null; |
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$this->getHeaders(); |
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//Not sure about this |
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$this->getQueryParameters(); |
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} |
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/** |
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* Get the request headers |
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* By-default we will get the following headers: |
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* HTTP_HOST |
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* HTTP_USER_AGENT |
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* HTTP_ACCEPT |
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* HTTP_ACCEPT_LANGUAGE |
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* HTTP_ACCEPT_ENCODING |
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* HTTP_ACCEPT_CHARSET |
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* HTTP_KEEP_ALIVE |
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* HTTP_CONNECTION, |
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* HTTP_CACHE_CONTROL |
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* HTTP_USER_AGENT |
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* HTTP_IF_MATCH |
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* HTTP_IF_NONE_MATCH |
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* HTTP_IF_MODIFIED |
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* HTTP_IF_MATCH |
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* HTTP_IF_NONE_MATCH |
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* HTTP_IF_UNMODIFIED_SINCE |
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* //TODO: these aren't really headers... |
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* REQUEST_URI |
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* REQUEST_METHOD |
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* REQUEST_TIME |
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* SERVER_NAME |
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* SERVER_PORT |
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* SERVER_PORT_SECURE |
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* SERVER_PROTOCOL |
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* SERVER_SOFTWARE |
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* CONTENT_TYPE |
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* CONTENT_LENGTH |
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* We may get user defined customized headers also like |
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* HTTP_DATASERVICEVERSION, HTTP_MAXDATASERVICEVERSION |
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* |
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* @return string[] |
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*/ |
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private function getHeaders() |
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{ |
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if (is_null($this->_headers)) { |
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$this->_headers = array(); |
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foreach ($_SERVER as $key => $value) { |
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if ((strpos($key, 'HTTP_') === 0) |
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|| (strpos($key, 'REQUEST_') === 0) |
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|| (strpos($key, 'SERVER_') === 0) |
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|| (strpos($key, 'CONTENT_') === 0) |
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) { |
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$trimmedValue = trim($value); |
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$this->_headers[$key] = isset($trimmedValue) ? $trimmedValue : null; |
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} |
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} |
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} |
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return $this->_headers; |
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} |
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/** |
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* get the raw incoming url |
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* |
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* @return string RequestURI called by User with the value of QueryString |
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*/ |
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public function getRawUrl() |
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{ |
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if (is_null($this->_rawUrl)) { |
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if (!preg_match('/^HTTTPS/', $_SERVER[ODataConstants::HTTPREQUEST_PROTOCOL])) { |
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$this->_rawUrl = ODataConstants::HTTPREQUEST_PROTOCOL_HTTP; |
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} else { |
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$this->_rawUrl = ODataConstants::HTTPREQUEST_PROTOCOL_HTTPS; |
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} |
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$this->_rawUrl .= "://" . $_SERVER[HttpProcessUtility::headerToServerKey(ODataConstants::HTTPREQUEST_HEADER_HOST)]; |
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$this->_rawUrl .= $_SERVER[ODataConstants::HTTPREQUEST_URI]; |
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//It looks like it is not working, for example if there is an $inlinecount then it will double the parameter |
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//if (!empty($_SERVER[ODataConstants::HTTPREQUEST_QUERY_STRING])) { |
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// $this->_rawUrl .= "?" . $_SERVER[ODataConstants::HTTPREQUEST_QUERY_STRING]; |
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//} |
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} |
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return $this->_rawUrl; |
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} |
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/** |
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* get the specific request headers |
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* |
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* @param string $key The header name |
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* |
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* @return string|null value of the header, NULL if header is absent. |
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*/ |
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public function getRequestHeader($key) |
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{ |
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if (!$this->_headers) { |
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$this->getHeaders(); |
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} |
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//PHP normalizes header keys |
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$trimmedKey = HttpProcessUtility::headerToServerKey(trim($key)); |
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if (array_key_exists($trimmedKey, $this->_headers)) { |
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return $this->_headers[$trimmedKey]; |
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} |
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return null; |
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} |
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/** |
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* Get the QUERY_STRING |
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* Note: This method will return empty string if no query string present. |
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* |
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* @return string $_header[HttpRequestHeaderQueryString] |
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*/ |
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private function getQueryString() |
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{ |
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if (array_key_exists(ODataConstants::HTTPREQUEST_QUERY_STRING, $_SERVER) && !empty($_SERVER[ODataConstants::HTTPREQUEST_QUERY_STRING])) { |
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return mb_convert_encoding(trim($_SERVER[ODataConstants::HTTPREQUEST_QUERY_STRING]), 'UTF-8'); |
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} else { |
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return ""; |
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} |
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} |
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/** |
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* Split the QueryString and assigns them as array element in KEY=VALUE |
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* |
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* @return string[] |
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*/ |
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public function getQueryParameters() |
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{ |
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if (is_null($this->_queryOptions)) { |
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$queryString = $this->getQueryString(); |
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$this->_queryOptions = array(); |
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//example $filter=CustomerID gt \'ALFKI\' |
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foreach (explode('&', $queryString) as $queryOptionAsString) { |
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$queryOptionAsString = trim($queryOptionAsString); |
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if (!empty($queryOptionAsString)) { |
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$result = explode('=', $queryOptionAsString, 2); |
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$isNamedOptions = count($result) == 2; |
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if ($isNamedOptions) { |
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$this->_queryOptions[rawurldecode($result[0])] = trim(rawurldecode($result[1])); |
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} else { |
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$this->_queryOptions[] |
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= array(null => trim(rawurldecode($result[0]))); |
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} |
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} |
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} |
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} |
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return $this->_queryOptions; |
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} |
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/** |
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* Get the HTTP method |
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* Value will be set from the value of the HTTP method of the |
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* incoming Web request. |
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* |
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* @return string $_header[HttpRequestHeaderMethod] |
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*/ |
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public function getMethod() |
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{ |
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return $this->_method; |
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} |
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} |
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