使用 nodeValue 从 domelement 打印出 html 内容

Question

I have image in html. I parse it to DOMDocument and start working with it...

$doc = new DOMDocument();
$doc->loadHTML($article_header);

$imgs = $doc->getElementsByTagName('img');
foreach ($imgs as $img) {
$container = $img->parentNode;

if ($container->tagName != "a") { 
    $image_inside=utf8_decode($img->nodeValue);
    echo "3".$image_inside;
    die;
}
}

This code works fine line 3 gets image. line 6 understands that there is no "a" tag above this "img" tag, and line 8 must print out my initial image. But the thing is I only see "3" without image tag and etc...

I did inspect element and nothing is there. just "3" is coming out. Why I cannot print out image?

Answer 1

You could use:

DOMDocument::saveXML($img);

From PHP Documetation's saveXML() .

$doc = new DOMDocument();
$doc->loadHTML($article_header);

$imgs = $doc->getElementsByTagName('img');
foreach ($imgs as $img) {
    $container = $img->parentNode;

    if ($container->tagName != "a") { 
       echo utf8_decode($doc->saveXML($img));
       die;
    }
}

If you're using PHP 5.3.6 you could use (from How to return outer html of DOMDocument? )

$doc->saveHtml($img);

Note the caveat mentioned in the linked-to question:

(...) use saveXml(), but that would create XML compliant markup. In the case of an <a>(<img>) element, that shouldn't be an issue though.