Example of a PHP function that returns XML

Question

I need sample code for a PHP function that returns XML.

Answer 1

function printxml() {
  echo "<xml></xml>";
}

Answer 2

function foo()
{
    return '<root><answer>Not doing your homework for you.</answer></root>';
}

Answer 3

From PHP manual on DOM

$doc = new DOMDocument('1.0');
// we want a nice output
$doc->formatOutput = true;

$root = $doc->createElement('book');
$root = $doc->appendChild($root);

$title = $doc->createElement('title');
$title = $root->appendChild($title);

$text = $doc->createTextNode('This is the title');
$text = $title->appendChild($text);

echo "Saving all the document:\n";
echo $doc->saveXML() . "\n";

echo "Saving only the title part:\n";
echo $doc->saveXML($title);