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PHP : Function Reference : DOM Functions : DOMDocument->getElementsByTagName()

DOMDocument->getElementsByTagName()

Searches for all elements with given tag name ()

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DOMDocument {
  DOMNodeList getElementsByTagName(string name);
}

This function returns a new instance of class DOMNodeList containing the elements with a given tag name.

Parameters

name: The name of the tag to match on. The special value * matches all tags.

Return Values

A new DOMNodeList object containing all the matched elements.

See Also

DOMDocument->getElementsByTagNameNS()

Examples ( Source code ) » DOMDocument->getElementsByTagName()


<?php

$xml =<<<EOT

<?xml version="1.0"?>

<config>

 <section id="section1">

  <param name="param1">value1</param>

  <param name="param2">value2</param>

 </section>

 <section id="section2">

  <param name="param3">value3</param>

 </section>

</config>

EOT;

$dom = new DomDocument;

$dom->preserveWhiteSpace = FALSE;

$dom->loadXML($xml);

$params = $dom->getElementsByTagName('param');

foreach ($params as $param) {

      echo $param -> getAttribute('name').'

';

}

?>

Expected result:

--------------

param1

param2

param3

Related Examples ( Source code ) » dom domdocument getelementsbytagname

Examples ( Source code ) » DOMDocument->getElementsByTagName() Examples

Code Examples / Notes » dom domdocument getelementsbytagname

finding values of a node

I don't know if this is that obvious but it was not for me, so in addition to gem at rellim dot com's posting: adding <?php echo $param -> nodeValue.' '; ?> to the loop will output value1 value2 value3

gem

Here is an example of getElementsByTagName(): <?php $xml =<<<EOT <?xml version="1.0"?> <config> <section id="section1"> <param name="param1">value1</param> <param name="param2">value2</param> </section> <section id="section2"> <param name="param3">value3</param> </section> </config> EOT; $dom = new DomDocument; $dom->preserveWhiteSpace = FALSE; $dom->loadXML($xml); $params = $dom->getElementsByTagName('param'); foreach ($params as $param) { echo $param -> getAttribute('name').' '; } ?> Expected result: -------------- param1 param2 param3

francois hill

Careful : getElementsByTagName will yield all elements with the given tag name under the present node, at any sub-level (i.e. among child nodes and all other descendant nodes)

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