How to replace the text of a node using DOMDocument
Set DOMNode::$nodeValue instead:
$doc->getElementsByTagName("title")->item(0)->nodeValue = $titleText;$doc->getElementsByTagName("description")->item(0)->nodeValue = $descriptionText;$doc->getElementsByTagName("link")->item(0)->nodeValue = $linkText;This overwrites the existing content with the new value.
as doub1ejack mentioned
$doc->getElementsByTagName("title")->item(0)->nodeValue = $titleText;will give error if $titleText = "& is not allowed in Node::nodeValue";
So the better solution would be
// clear the existing text content$doc->getElementsByTagName("title")->item(0)->nodeValue = "";// then create new TextNode$doc->getElementsByTagName("title")->item(0)->appendChild($doc->createTextNode($titleText));