DOM XML (PHP 4) 函数
PHP Manual

DomDocument->document_element

(PHP 4 >= 4.1.0)

DomDocument->document_element Returns root element node

说明

domelement DomDocument->document_element ( void )

This function returns the root element node of a document.

The following example returns just the element with name CHAPTER and prints it. The other node -- the comment -- is not returned.

Example #1 Retrieving root element

<?php
include("example.inc");

if (!
$dom domxml_open_mem($xmlstr)) {
  echo 
"Error while parsing the document\n";
  exit;
}

$root $dom->document_element();
print_r($root);
?>

以上例程会输出:

domelement Object
(
    [type] => 1
    [tagname] => chapter
    [0] => 6
    [1] => 137960648
)


DOM XML (PHP 4) 函数
PHP Manual