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Dom\TokenList::item

(PHP 8 >= 8.4.0)

Dom\TokenList::item — Returns a token from the list

说明

public Dom\TokenList::item(int $index): ?string

Returns a token from the list at index.

参数

index
The token index.

返回值

Returns the token at index or null when the index is out of bounds.

示例

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

注释

注意: This method is equivalent to using array access syntax.