GoLang DOMAttr::isId

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PHP DOMAttr::isId

PHP original manual for DOMAttr::isId [ show | php.net ]

DOMAttr::isId

(PHP 5, PHP 7)

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

Description

public 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)

?>