DOMAttr::isId

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

DOMAttr::isId — Checks if attribute is a defined ID

Description

bool DOMAttr::isId ( void )

This function checks if the attribute is a defined 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.

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 DOMAttr->isId() Example


<?php



$doc = new DomDocument;



// We need to validate our document before refering to the id

$doc->validateOnParse = true;

$doc->Load('book.xml');



// We retrieve the attribute named id of the chapter element

$attr = $doc->getElementsByTagName('chapter')->item(0)->getAttributeNode('id');



var_dump($attr->isId()); // bool(true)



?>