一、正则代码
preg_match("/(.*)/i", $html, $title);
preg_match("//i", $html, $keywords);
preg_match("//i", $html, $description...data['description']['content'] = '';
$html = mb_substr($html, 0, 1000);
preg_match...("/(.*)/i", $html, $title);
preg_match("//...i", $html, $keywords);
preg_match("//i", $html, $description