DOMElement::innerHTML 的原始内容

Question

How, in PHP, I can get the raw content of DOMElement , like JS innerHTML does?

I tried with saveHTML() or saveXML() iterating over each childNodes to simulate innerHTML , but it replaced code like turning <br /> to <br> or <br/> (in case of the XML version).

Answer 1

This can be achieved in a hacky but reliable way. PHP has the equivalent of outerHTML by passing the node to its parent document's saveHTML() method. Because this output is well-formed and escaped, you can easily strip the single outer tag from the text, leaving the desired innerHTTML .

Example:

$dom = new DOMDocument;
$dom->loadHTML('<div><p with="scary<>\'&quot;" attrs=40 ok>Hello <em>World</em></div>');
$xpath = new DOMXPath($dom);
foreach ($xpath->query('//p') as $p) {
    $innerHTML = preg_replace('@^<([^>\\s]+)[^>]*>(.*)</\\1>$@s', '$2', $dom->saveHTML($p));
    var_dump($p);
}

Demo of regex: https://regex101.com/r/yEVMQx/2

Note the s flag on the regex is critical.