Change innerHTML of a php DOMElement [duplicate]

Answer 1

Developing on from Joanna Goch's answer, this function will insert either a text node or an HTML fragment:

function nodeFromContent($node, $content) {
    //creates a text node, or dom node if content contains html 
    $lt = strpos($content, '<');
    $gt = strrpos($content, '>');
    if (!($lt === false || $gt === false) && $gt > $lt) {
        //< followed by > means potentially contains HTML
        $DOMInnerHTML = new DOMDocument();
        $DOMInnerHTML->loadHTML($content);
        $contentNode = $DOMInnerHTML->getElementsByTagName('body')->item(0);
        $newNode = $node->ownerDocument->importNode($contentNode, true);
    } else {
        $newNode = $node->ownerDocument->createTextNode($content); 
    }
    return $newNode;
}

usage

$newNode = nodeFromContent($node, $content);
$node->parentNode->insertBefore($newNode, $node);
//or $node->appendChild($newNode) depending on what you require