(PHP 8 >= 8.4.0)
Dom\TokenList::contains — Returns whether the list contains a given token
token示例 #1 Dom\TokenList::contains() example
Checks whether two classes are present on the paragraph.
<?php
$dom = Dom\HTMLDocument::createFromString('<p class="font-bold important"></p>', LIBXML_NOERROR);
$p = $dom->body->firstChild;
$classList = $p->classList;
var_dump(
$classList->contains('important'),
$classList->contains('font-small'),
);
?>以上示例会输出：
bool(true) bool(false)