DomElement->get_elements_by_tagname

(PHP 4 >= 4.1.0)

DomElement->get_elements_by_tagname Gets elements by tagname

Description

array DomElement::get_elements_by_tagname ( string $name )

Gets all the sub elements with the specific name within the current element.

Parameters

name

The name of the seeked element.

Return Values

Returns an array of DomElement objects.

Examples

Example #1 Getting a content

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

$root $dom->document_element();

$node_array $root->get_elements_by_tagname('element');

foreach (
$node_array as $node) {
    echo 
' - ' $node->get_content() . "\n";
}

?>

Migrating to PHP 5

Use DOMElement::getElementsByTagName.

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User Contributed Notes 3 notes

up
0
mikhail dot nemtsev at gmail dot com
5 years ago
This example uses get_elements_by_tagname() and child_nodes() to output the contents of the xml file. The sample xml file and php code are below.

<?xml version="1.0" encoding="iso-8859-1"?>
<dictionary>
 <entry>
    <word>Hello</word>
    <meaning>used to express a greeting</meaning>
    <example>Hello World!</example>
 </entry>
</dictionary>

<?php
$xml_path
= "/some/dir/dictionary.xml";
    if (!
$dom = domxml_open_file($xml_path)) {
       
//the above requires absolube path
       
exit("Could not access the XML source.");
    }
   
$root = $dom->document_element(); //obtain the root
   
$array_entry = $root->get_elements_by_tagname("entry"); //gets all <entry> DomElems
   
foreach ($array_entry as $entry_dom_elem) {   
       
$childnodes = $entry_dom_elem->child_nodes();
        foreach (
$childnodes as $child) { //cycle thru <word>, <meaning>, <example>
           
echo "node name: ".$child->tagname() . "; contains: " . $child->get_content()."<br>";
           
        }
    }
?>
The above code outputs:
node name: word; contains: Hello
node name: meaning; contains: used to express a greeting
node name: example; contains: Hello World!
up
0
php dot net dot 3 dot jdoe at spamgourmet dot com
10 years ago
Function get_elements_by_tagname() is only defined for the DocumentRoot-Element rather than for any DocumentElement.
up
0
chregu at php dot net
11 years ago
if you want to search for tagnames with namespaces, do it the following way:
(it's a work around, not a really proper solution..)

$dom = domxml_open_mem($xmlval);
$ctx=xpath_new_context($dom);
$ctx->xpath_register_ns("yns","http://your.name.space/uri");
$nodes = $dom->get_elements_by_tagname("yns:tagname",$ctx);
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