DOMDocumtent 不会将 LoadHTML 转换为 UTF-8

Question

据我了解，默认情况下 loadHTML 加载拉丁文 1 的内容，我想将其转换为 UTF-8 字符。代码如下：

    // get data from website
    function get_url_contents($url){

            $crl = curl_init();
            $timeout = 5;
            curl_setopt ($crl, CURLOPT_ENCODING, 'UTF-8');
            curl_setopt ($crl, CURLOPT_URL,$url);
            curl_setopt ($crl, CURLOPT_RETURNTRANSFER, 1);        
            curl_setopt ($crl, CURLOPT_CONNECTTIMEOUT, $timeout);
            $ret = curl_exec($crl);
            curl_close($crl);
            return $ret;
    }

// Now here is the domdoc
function get_all_meta_tags($html){

    $html = get_url_contents($html);

    $doc = new DOMDocument('1.0', 'UTF-8');

    $doc->encoding = 'UTF-8';

    $nodes = $doc->getElementsByTagName('title');
    $title = $nodes->item(0)->nodeValue;
    $arr['title']=$title;

    $nodes = $doc->getElementsByTagName('h1');
    $h1 = $nodes->item(0)->nodeValue;
    $arr['h1']=$h1;

    $metas = $doc->getElementsByTagName('meta');

for ($i = 0; $i < $metas->length; $i++)
{
$mt = $metas->item($i);

if($mt->getAttribute('name')=='description')
$dec=$mt->getAttribute('content');$arr['description']=$dec;
if($mt->getAttribute('name')=='keywords')
$key=$mt->getAttribute('content');$arr['keywords']=$key;
}
return $arr;
}

现在你可以看到我从网页中抓取数据，问题是这个词没有转换成 UTF-8。例如“Az utolsó dal”需要蜜蜂“Az utolsó dal”。有人可以指导我解决问题或解决方案吗？

Answer 1

有一个 hack 可以强制 HTML 文档使用 UTF-8，只需将它们作为 XML 读取：

$dom->loadHTML( '<?xml encoding="UTF-8">' . $content );

对于你的情况：

$html = get_url_contents($html);

// this is necessary to prevent DOMDocument errors on HTML5-elements
libxml_use_internal_errors( true );

$doc = new DOMDocument();

// UTF-8 hack, to correctly handle UTF-8 through DOMDocument
$doc->loadHTML( '<?xml encoding="UTF-8">' . $html );