php的问题，研究了很久没有搞好。
2023/08/06 23:21:04
- <?php/** 获取META信息 */function get_sitemeta($url) { $data = file_get_contents($url); $meta = array(); if (!empty($data)) { #Title preg_match('/<TITLE>([\w\W]*?)<\/TITLE>/si', $data, $matches); if (!empty($matches[1])) { $meta['title'] = $matches[1]; } #Keywords preg_match('/<META\s+name="keywords"\s+content="([\w\W]*?)"/si', $data, $matches); if (empty($matches[1])) { preg_match("/<META\s+name='keywords'\s+content='([\w\W]*?)'/si", $data, $matches); } if (empty($matches[1])) { preg_match('/<META\s+content="([\w\W]*?)"\s+name="keywords"/si', $data, $matches); } if (empty($matches[1])) { preg_match('/<META\s+http-equiv="keywords"\s+content="([\w\W]*?)"/si', $data, $matches); } if (!empty($matches[1])) { $meta['keywords'] = $matches[1]; } #Description preg_match('/<META\s+name="description"\s+content="([\w\W]*?)"/si', $data, $matches); if (empty($matches[1])) { preg_match("/<META\s+name='description'\s+content='([\w\W]*?)'/si", $data, $matches); } if (empty($matches[1])) { preg_match('/<META\s+content="([\w\W]*?)"\s+name="description"/si', $data, $matches); } if (empty($matches[1])) { preg_match('/<META\s+http-equiv="description"\s+content="([\w\W]*?)"/si', $data, $matches); } if (!empty($matches[1])) { $meta['description'] = $matches[1]; } } return $meta;}?> <?php$stie =get_meta_tags('http://www.'.$_GET['url']);$title = $stie['title'];$keywords = $stie['keywords'];$description = $stie['description'];echo "<b>网站标题:</b> $title<br>";echo "<b>网站关键字:</b> $keywords<br>";echo "<b>网站描述:</b> $description<br>";?>