_asin = $asin; $this->iframeUrl = $iframeUrl; $this->_cache = $cache; } public function load() { if ($this->_cache == null) { // if cache could not be initialized $this->_grabReview(); } else { $reviewCacheId = 'CustomerReviews_'. $this->_asin; $reviewData = $this->_cache->load($reviewCacheId); if (empty($reviewData)) { // data is not cached yet $this->_grabReview(); $reviewData = array( 'imgTag' => $this->imgTag, 'imgSrc' => $this->imgSrc, 'totalReviews' => $this->totalReviews, 'averageRating' => $this->averageRating ); // put data in cache $this->_cache->save($reviewData, $reviewCacheId); } else { // load data from cache $this->imgTag = $reviewData['imgTag']; $this->imgSrc = $reviewData['imgSrc']; $this->totalReviews = $reviewData['totalReviews']; $this->averageRating = $reviewData['averageRating']; } } if (strstr($this->averageRating, ',')) { $this->averageRating = str_replace(',', '.', $this->averageRating); } if (empty($this->averageRating)) { $this->averageRating = 0; } } /** * open the iframe and grab the relevant data */ protected function _grabReview () { $iframeContents = $this->_getIframeContents(); if ($iframeContents != '') { $this->_getReviewsData($iframeContents); } } /** * get img tag and src from iframe html * @param string $contents */ protected function _getReviewsData ($contents) { $patternTag = '~]+>~is'; $patternSrc = '/(src)="([^"]*)"/i'; $patternAlt = '/(alt)="([^"]*)"/i'; $patternCnt = '~]*>(.*?)~is'; if (preg_match($patternTag, $contents, $matchTag) == 1) { $this->imgTag = $matchTag[0]; if (preg_match($patternSrc, $this->imgTag, $matchSrc) == 1) { $this->imgSrc = $matchSrc[2]; } if (preg_match($patternAlt, $this->imgTag, $matchAlt) == 1) { $alt = explode(' ', $matchAlt[2]); $this->averageRating = $alt[0]; } } if (preg_match_all($patternCnt, $contents, $matchCnt)) { $count = explode(' ', $matchCnt[1][1]); $count = str_replace(',', '', $count); $count = str_replace('.', '', $count); $this->totalReviews = intval($count[0]); } } /** * read the iframe contents and grab the relevant code * @return string $contents */ protected function _getIframeContents () { $contents = ''; if (!empty($this->iframeUrl)) { $this->_response = wp_remote_get($this->iframeUrl); if (!is_wp_error($this->_response)) { // success if (isset($this->_response['response']['code'])) { $this->_statusCode = $this->_response['response']['code']; } $body = $this->_response['body']; global $asa; if ($asa->isDebug()) { $asa->getDebugger()->write($body); } if ($this->getFindMethod() == self::FIND_METHOD_DOM) { $body = preg_replace("/\r|\n/", "", $body); $charset = get_bloginfo('charset'); if ($charset == 'UTF-8') { $body = str_replace("\xC2\xA0", ' ', html_entity_decode($body, ENT_COMPAT, $charset)); } else { $body = str_replace("\xA0", ' ', html_entity_decode($body, ENT_COMPAT, $charset)); } $dom = new DomDocument(); @$dom->loadHTML($body); $finder = new DomXPath($dom); $classname = 'crIFrameNumCustReviews'; $nodes = $finder->query("//*[contains(@class, '$classname')]"); foreach ($nodes as $node) { $contents .= $dom->saveXML($node); } } elseif ($this->getFindMethod() == self::FIND_METHOD_FALLBACK) { $saveBuffer = false; foreach(preg_split("/$\R?^/m", $body) as $line){ if (trim($line) == '

') { $saveBuffer = true; } if ($saveBuffer === true && trim($line) == '

') { $saveBuffer = false; } if ($saveBuffer === true) { $contents .= $line; } } } } else { $this->_errorMessage = $this->_response->get_error_message(); } } return $contents; } /** * @return bool */ public function isSuccess() { return $this->_statusCode == 200; } /** * @return string */ public function getErrorMessage() { return $this->_errorMessage; } /** * @return mixed */ public function getBody() { return $this->_response['body']; } /** * @return mixed */ public function getResponse() { return $this->_response; } /** * @param int $findMethod */ public function setFindMethod($findMethod) { if ($findMethod == self::FIND_METHOD_DOM || $findMethod == self::FIND_METHOD_FALLBACK) { $this->_findMethod = $findMethod; } } /** * @return int */ public function getFindMethod() { return $this->_findMethod; } }