[edit] Last updated: Tue, 21 May 2013

DOMDocument::createAttribute

(PHP 5)

DOMDocument::createAttribute — Create new attribute

Descrizione

DOMAttr DOMDocument::createAttribute ( string $name )

This function creates a new instance of class DOMAttr. Questo nodo non verrà mostrato nel documento a meno che venga inserito con, es. DOMNode::appendChild().

Elenco dei parametri

name: The name of the attribute.

Valori restituiti

The new DOMAttr or FALSE if an error occurred.

Errori/Eccezioni

DOM_INVALID_CHARACTER_ERR: Raised if name contains an invalid character.

Vedere anche:

DOMNode::appendChild() - Adds new child at the end of the children
DOMDocument::createAttributeNS() - Create new attribute node with an associated namespace
DOMDocument::createCDATASection() - Create new cdata node
DOMDocument::createComment() - Create new comment node
DOMDocument::createDocumentFragment() - Create new document fragment
DOMDocument::createElement() - Create new element node
DOMDocument::createElementNS() - Create new element node with an associated namespace
DOMDocument::createEntityReference() - Create new entity reference node
DOMDocument::createProcessingInstruction() - Creates new PI node
DOMDocument::createTextNode() - Create new text node

add a note User Contributed Notes DOMDocument::createAttribute - [2 notes]

down

Beerkeeper ¶

1 year ago


Just in case it isn't clear (like I had), an example:



<?php



$domDocument = new DOMDocument('1.0', "UTF-8");

$domElement = $domDocument->createElement('field','some random data');

$domAttribute = $domDocument->createAttribute('name');



// Value for the created attribute

$domAttribute->value = 'attributevalue';



// Don't forget to append it to the element

$domElement->appendChild($domAttribute);



// Append it to the document itself

$domDocument->appendChild($domElement);



?>



Will output:

<?xml version="1.0" encoding="UTF-8"?>

<field name="attributevalue">some random data</field>

down

Skateside ¶

1 month ago


This may be obvious to most people, but it gave me a few minutes of head-scratching before I figured it out, but ampersands need to be properly escaped as HTML entities.



<?php

$doc= new DOMDocument('1.0', "UTF-8");



$invalid_elem = $doc->createElement('field', 'incorrect attribute');

$invalid_attr = $doc->createAttribute('name');

$invalid_attr->value = 'foo&bar';

$invalid_elem->appendChild($invalid_attr);

$doc->appendChild($invalid_elem);



$valid_elem = $doc->createElement('field', 'correct attribute');

$valid_attr = $doc->createAttribute('name');

$valid_attr->value = 'foo&amp;bar';

$valid_elem->appendChild($valid_attr);

$doc->appendChild($valid_elem);



?>



Will output:

<?xml version="1.0" encoding="UTF-8"?>

<field name="foo">incorrect attribute</field>

<field name="foo&bar">correct attribute</field>



As near as I can figure out, no exception is thrown for an invalid attribute. This will affect DOMDocuments created as HTML as well as XML.

add a note