DOM XML (PHP 4) 函数
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DomElement::get_elements_by_tagname

(PHP 4 >= 4.1.0)

DomElement::get_elements_by_tagname Gets elements by tagname

说明

array DomElement::get_elements_by_tagname ( string $name )

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

参数

name

The name of the seeked element.

返回值

Returns an array of DomElement objects.

范例

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.


DOM XML (PHP 4) 函数
在线手册:中文 英文
PHP手册
PHP手册 - N: Gets elements by tagname

用户评论:

mikhail dot nemtsev at gmail dot com (24-Aug-2008 04:21)

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!

php dot net dot 3 dot jdoe at spamgourmet dot com (30-Mar-2004 06:55)

Function get_elements_by_tagname() is only defined for the DocumentRoot-Element rather than for any DocumentElement.

chregu at php dot net (30-Oct-2002 03:02)

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);