target = $target; if (!isset($client)) { throw new Exception('No available http client', 50); } try { $client->setTimeout(5) ->send($url); } catch (HttpException $e) { throw new Exception('Pingback http error', 50); } if ($client->getResponseStatus() != 200) { throw new Exception('Pingback wrong http status', 50); } $response = $client->getResponseBody(); $encoding = 'UTF-8'; $contentType = $client->getResponseHeader('Content-Type'); if (!empty($contentType) && preg_match("/charset=([_a-z0-9-]+)/i", $contentType, $matches)) { $encoding = strtoupper($matches[1]); } elseif (preg_match("/html = $encoding == 'UTF-8' ? $response : mb_convert_encoding($response, 'UTF-8', $encoding); if ( !$client->getResponseHeader('X-Pingback') && !preg_match_all("/]*rel=[\"']pingback[\"'][^>]+href=[\"']([^\"']*)[\"'][^>]*>/i", $this->html) ) { throw new Exception("Source server doesn't support pingback", 50); } } /** * get title * * @return string */ public function getTitle(): string { if (preg_match("/\([^<]*?)\<\/title\\>/is", $this->html, $matchTitle)) { return Common::subStr(Common::removeXSS(trim(strip_tags($matchTitle[1]))), 0, 150, '...'); } return parse_url($this->target, PHP_URL_HOST); } /** * get content * * @return string * @throws Exception */ public function getContent(): string { /** 干掉html tag，只留下*/ $text = Common::stripTags($this->html, ''); /** 此处将$target quote,留着后面用*/ $pregLink = preg_quote($this->target); /** 找出含有target链接的最长的一行作为$finalText*/ $finalText = null; $lines = explode("\n", $text); foreach ($lines as $line) { $line = trim($line); if (null != $line) { if (preg_match("|]*href=[\"']{$pregLink}[\"'][^>]*>(.*?)|", $line)) { if (strlen($line) > strlen($finalText)) { /** 也要干掉，*/ $finalText = Common::stripTags($line); break; } } } } if (!isset($finalText)) { throw new Exception("Source page doesn't have target url", 50); } return '[...]' . Common::subStr($finalText, 0, 200, '') . '[...]'; } }