Creating sub element in XML

Question

I am trying to accomplish the following:

Harry potter
Adven         


        

Answer 1

Affffding nodes to the DOM requires 3 Steps

1. Create the node using Document methods like createElement() or createTextNode()
2. Configure the node and append child nodes
3. Append the node to its parent node

Step 2 and 3 are exchangeable. You can configure a node after you appended it or before. appendChild() returns the append node.

I indented the calls depending on the level in the result xml:

$doc = new DOMDocument('1.0');
$doc->formatOutput = true;

$books = $doc->appendChild($doc->createElement('books'));
  $book = $books->appendChild($doc->createElement('book'));
    $name = $book->appendChild($doc->createElement('name'));
      $name->appendChild($doc->createTextNode('Harry potter'));
    $category = $book->appendChild($doc->createElement('category'));
      $category->appendChild($doc->createTextNode('Adventure | Family | Fantasy'));
    $pages = $book->appendChild($doc->createElement('pages'));
      $pages->appendChild($doc->createTextNode('850'));

    $author = $book->appendChild($doc->createElement('author'));
      $authorName = $author->appendChild($doc->createElement('author_name'));
        $authorName->appendChild($doc->createTextNode('John Doe'));
      $authorWiki = $author->appendChild($doc->createElement('author_wiki'));
        $authorWiki->appendChild($doc->createTextNode('http://wikipedia....'));

    $description = $book->appendChild($doc->createElement('description'));
      $description->appendChild($doc->createTextNode('lorem ipsum blabla'));

echo $doc->saveXML();