php-doc-en/reference/domxml/functions/DomDocument-document-element.xml

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  <refentry id="function.DomDocument-document-element">
   <refnamediv>
    <refname>DomDocument->document_element</refname>
    <refpurpose>
     Returns root element node
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <methodsynopsis>
     <type>object</type><methodname>DomDocument->document_element</methodname>
     <void/>
    </methodsynopsis>
    <para>
     This function returns the root element node of a document. 
    </para>
    <para>
     The following example returns just the element with name CHAPTER and
     prints it. The other node -- the comment -- is not returned.
     <example>
      <title>Retrieving root element</title>
      <programlisting role="php">
<![CDATA[
<?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);
?>
]]>
      </programlisting>
     </example>
    </para>
   </refsect1>
  </refentry>

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