gan_node_html.php
function deleteChild($child, $soft_delete = false) {
		if (is_object($child)) {
			$child = $this->findChild($child);
		} elseif ($child < 0) {
			$child += count($this->children);
		}

		if (!$soft_delete) {
			$this->children[$child]->delete();
		}
		unset($this->children[$child]);

		//Rebuild indices
		$tmp = array();

		//foreach($this->children as &$c) {
		//	$tmp[] =& $c;
		//}
		foreach(array_keys($this->children) as $k) {
			$tmp[] =& $this->children[$k];
		}
		$this->children = $tmp;
	}
function deleteChild($child, $soft_delete = false) {
		if (is_object($child)) {
			$child = $this->findChild($child);
		} elseif ($child < 0) {
			$child += count($this->children);
		}

		if (!$soft_delete) {
			$this->children[$child]->delete();
		}
		unset($this->children[$child]);

		//Rebuild indices
		$tmp = array();

		//foreach($this->children as &$c) {
		//	$tmp[] =& $c;
		//}
		foreach(array_keys($this->children) as $k) {
			$tmp[] =& $this->children[$k];
		}
		$this->children = $tmp;
	}
Delete a child node
@param int|DomNode $child Child(index) to delete, negative to count from end
@param bool $soft_delete False to call {@link delete()} from child