Question

我已将博客帐户中的内容导入Wordpress博客。

我不得不应用一些xpath和regex来删除一些讨厌的格式。

global $post;
$html = mb_convert_encoding($content, 'HTML-ENTITIES', "UTF-8");
$doc = new DOMDocument();@$doc - > loadHTML($html);
$xpath = new DOMXPath($doc);
foreach($xpath - > query('//br[not(preceding::text())]') as $node) {
    $node - > parentNode - > removeChild($node);
}
$nodes = $xpath - > query('//a[string-length(.) = 0]');
foreach($nodes as $node) {
    $node - > parentNode - > removeChild($node);
}
$nodes = $xpath - > query('//*[not(text() or node() or self::br)]');
foreach($nodes as $node) {
    $node - > parentNode - > removeChild($node);
}
remove_filter('the_content', 'wpautop');
$content = $doc - > saveHTML();
$content = ltrim($content, '<br>');
$content = strip_tags($content, '<br> <a> <iframe>');
$content = preg_replace(array('/(<br\s*\/?>\s*){1,}/'), array('<br/><br/>'), $content);
$content = str_replace('&nbsp;', ' ', $content);
$content = "<p>".implode("</p>\n\n<p>", preg_split('/\n(?:\s*\n)+/', $content))."</p>";
return $content;

出于某种原因，虽然在我的页面中打印了随机的DOCTYPE，但我不知道为什么。

<p>!DOCTYPE html PUBLIC &#8220;-//W3C//DTD HTML 4.0 Transitional//EN&#8221; &#8220;http://www.w3.org/TR/REC-html40/loose.dtd&#8221;>
    <br/>
    <br/>When the battle is on between contestants in a talent show, it gets really competitive when down to the last four. X-FactorUSAcontestant Marcus Canty knows this all too well as this is the stage he was voted off of the show earlier this year.
    <br/>
    <br/>
</p>

有人能指出我为何会发生这种情况的方向吗？

Answer 1

当您使用DOMDocument加载一段html代码时，会自动添加一个Doctype，一个html，head和body标签（如果缺少）到这段html（并且关闭未关闭的标签）以使其成为“有效” HTML文档。因此，当您使用saveHTML时，您可以保存所有这些内容。如果我记得很清楚，你可以在PHP手册中找到一些技巧来避免这种情况（在帖子中）

为什么Doctype会打印在我的页面上？

1 个答案: