(PHP 8 >= 8.4.0)
Dom\TokenList::item — Returns a token from the list
index
Returns the token at index or null when the index
is out of bounds.
示例 #1 Dom\TokenList::item() example
Accesses a valid index and an invalid index.
<?php
$dom = Dom\HTMLDocument::createFromString('<p class="font-bold important"></p>', LIBXML_NOERROR);
$p = $dom->body->firstChild;
$classList = $p->classList;
var_dump(
$classList->item(0),
$classList->item(100),
);
?>以上示例会输出：
string(9) "font-bold" NULL
注意: This method is equivalent to using array access syntax.