/**
* Find out if node has (a certain) parent
* @param HTML_Node|string $tag Match against parent, string to match tag, object to fully match node, null to return if node has parent
* @param bool $recursive
* @return bool
*/
function hasParent($tag = null, $recursive = false)
{
if ($this->parent !== null) {
if ($tag === null) {
return true;
} elseif (is_string($tag)) {
return $this->parent->tag === $tag || $recursive && $this->parent->hasParent($tag);
} elseif (is_object($tag)) {
return $this->parent === $tag || $recursive && $this->parent->hasParent($tag);
}
}
return false;
}
