View file File name : traversing-dom-tree.md Content :If you are not so familiar with HTML DOM, check this [link](http://php.net/manual/en/book.dom.php) to learn more... ```php // Example echo $html->find("#div1", 0)->children(1)->children(1)->children(2)->id; // or echo $html->getElementById("div1")->childNodes(1)->childNodes(1)->childNodes(2)->getAttribute('id'); ``` You can also call methods using the **Camel naming conventions**. | Method | Description | |----------------------------------------|--------------------------------------------------------------------------------------------------| | `$e->children( [int $index] ) : mixed` | Returns the Nth **child object** if **index** is set, otherwise return an **array of children**. | | `$e->parent() : element` | Returns the **parent** of element. | | `$e->first_child() : element` | Returns the **first child** of element, or **null** if not found. | | `$e->last_child() : element` | Returns the **last child** of element, or **null** if not found. | | `$e->next_sibling() : element` | Returns the **next sibling** of element, or **null** if not found. | | `$e->prev_sibling() : element` | Returns the **previous sibling** of element, or **null** if not found. |