code: 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;
  	}
docs: 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