/**
* Insert Node
*
* This method adds a new XML node. Node could be a instance of xmlTag, an
* array of valid values, a boolean or a string.
*
* @param xmlTag|array|boolean|string $node Node value
*/
public function insertNode($node = null)
{
if ($node instanceof self) {
$this->_nodes[] = $node;
} elseif (is_array($node)) {
$child = new self(null);
foreach ($node as $tag => $n) {
$child->insertNode(new self($tag, $n));
}
$this->_nodes[] = $child;
} elseif (is_bool($node)) {
$this->_nodes[] = $node ? '1' : '0';
} else {
$this->_nodes[] = (string) $node;
}
}
