DOMDocument->getElementById()

(No version information available, might be only in CVS)

DOMDocument->getElementById() — Searches for an element with a certain id

Описание

DOMDocument

DOMElement 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.

Список параметров

elementId: The unique id value for an element.

Возвращаемые значения

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

Примеры

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";

?>

Результат выполнения данного примера:

The element whose id is books is: chapter

Смотрите также

DOMDocument->getElementsByTagName()

Добавил Ejena.net в Понедельник, 19 июня 2006 Раздел: PHP.