IT. Expert System.

PHP

Searches for an element with a certain id


DOMDocument::getElementById

(PHP 5)

DOMDocument::getElementByIdSearches for an element with a certain id

Description

DOMElement DOMDocument::getElementById ( string $elementId )

This function is similar to DOMDocument::getElementsByTagName but searches for an element with a given id.

For this function to work, you will need either to set some ID attributes with DOMElement::setIdAttribute or a DTD which defines an attribute to be of type ID. In the later case, you will need to validate your document with DOMDocument::validate or DOMDocument::$validateOnParse before using this function.

Parameters

elementId

The unique id value for an element.

Return Values

Returns the DOMElement or NULL if the element is not found.

Examples

Example #1 DOMDocument::getElementById() Example

<?php

$doc 
= new DomDocument;

// We need to validate our document before refering to the id
$doc->validateOnParse true;
$doc->Load('book.xml');

echo 
"The element whose id is books is: " $doc->getElementById('books')->tagName "\n";

?>

The above example will output:

 The element whose id is books is: chapter 

See Also



Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 1029 / 158736007. Delta: 0.00363 с