Руководство по PHP
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DOMDocument->getElementById()

(no version information, might be only in CVS)

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

Описание

class DOMDocument {

DOMElement getElementById ( string elementId )

}

This function is similar to DOMDocument->getElementsByTagName() but searches for an element with a given id.

According to the DOM standard this requires a DTD which defines the attribute ID to be of type ID. You 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

Пример 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()

Пред.НачалоСлед.
DOMDocument->createTextNode()Уровень вышеDOMDocument->getElementsByTagName()