Dom\TokenList::add

(PHP 8 >= 8.4.0)

Dom\TokenList::add — Adds the given tokens to the list

Description

public function Dom\TokenList::add(string ...$tokens): void

Adds the given tokens to the list, but not any that were already present.

Parameters

tokens: The tokens to add.

Return Values

No value is returned.

Errors/Exceptions

Throws a ValueError if a token contains any null bytes.
Throws a Dom\DOMException with code Dom\SYNTAX_ERR if a token is the empty string.
Throws a Dom\DOMException with code Dom\INVALID_CHARACTER_ERR if a token contains any ASCII whitespace.

Examples

Example #1 Dom\TokenList::add() example

Adds two classes to a newly created paragraph element.

<?php
$dom = Dom\HTMLDocument::createEmpty();
$p = $dom->createElement('p');

$classList = $p->classList;
$classList->add('font-bold', 'important');

echo $dom->saveHtml($p);
?>

The above example will output:

<p class="font-bold important"></p>