/**
* setElementValue
*
* @param DOMDocument $dom
* @param DOMElement $node
* @param mixed $value
*
* @return null|bool returns false if no value was set, else null;
*/
private function setElementValue(DOMDocument $dom, DOMElement $node, $value = null)
{
if ($value instanceof \SimpleXMLElement) {
return $node->appendChild($dom->importNode(dom_import_simplexml($value), true));
}
if ($value instanceof \DOMDocument) {
return $node->appendDomElement($value->firstChild);
}
if ($value instanceof \DOMElement) {
return $dom->appendDomElement($value, $node);
}
if (is_array($value) || $value instanceof \Traversable) {
return $this->buildXML($dom, $node, $value);
}
if (is_int($value) || is_float($value)) {
return $this->createText($dom, $node, (string) $value);
}
if (is_bool($value)) {
return $this->createText($dom, $node, $value ? 'true' : 'false');
}
if (is_string($value) || null === $value) {
return $this->appendTextNode($dom, $node, (string) $value);
}
return false;
}