betterCode() PHP 2025

    Dom\TokenList::toggle

    (PHP 8 >= 8.4.0)

    Dom\TokenList::toggle — Toggles the presence of a token in the list

    说明

    public Dom\TokenList::toggle(string $token, ?bool $force = null): bool

    Toggles the presence of token in the list.

    参数

    token
    The token to toggle.
    force
    If force is provided, setting it to true will add the token, and setting it to false will remove the token.

    返回值

    Returns true if the token is in the list after the call, false otherwise.

    错误／异常

    示例

    示例 #1 Dom\TokenList::toggle() example

    Toggles three classes, two without force, and one with.

    <?php
    $dom     = Dom\HTMLDocument::createFromString('<p class="font-bold important"></p>', LIBXML_NOERROR);
    $p = $dom->body->firstChild;

    $classList = $p->classList;
    $classList->toggle('font-bold', 'font-small');
    $classList->toggle('important', force: true);

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

    以上示例会输出：

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

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