DomNode->has_child_nodes
DomNode->is_blank_node
DOM XML Funções
PHP Manual

# DomNode->insert_before

(PHP 4 >= 4.1.0)

DomNode->insert_before — Inserts new node as child

### Descrição

domelement DomNode->insert_before ( domelement `$newnode` , domelement `$refnode` )

This function inserts the new node `newnode` right before the node `refnode` . The return value is the inserted node. If you plan to do further modifications on the appended child you must use the returned node.

(PHP >= 4.3 only) If `newnode` already is part of a document, it will be first unlinked from its existing context. If `refnode` is NULL, then `newnode` will be inserted at the end of the list of children.

domnode_insert_before() is very similar to domnode_append_child() as the following example shows which does the same as the example at domnode_append_child().

Exemplo #1 Adding a child

`<?php
include("example.inc");
if (!$dom = domxml_open_mem($xmlstr)) {
echo "Error while parsing the document\n";
exit;
}
$elements = $dom->get_elements_by_tagname("informaltable");
print_r($elements);
$element = $elements[0];
$newnode = $element->insert_before($element, $element);
$children = $newnode->children();
$attr = $children[1]->set_attribute("align", "left");
echo "<pre>";
$xmlfile = $dom->dump_mem();
echo htmlentities($xmlfile);
echo "</pre>";
?>`

See also domnode_append_child().

DomNode->has_child_nodes
DomNode->is_blank_node
DOM XML Funções
PHP Manual