php - Tidy to xhtml with parameters such as allowFullScreen

Question

I'm parsing simple oembed urls from youtube, and converting them to xhtml, however, some html gets tidy'd (I believe to be) incorrectly. Shouldn't the valid xhtml be allowFullScreen="true"????? If this is correct, is there some tidy module that will do that? I must I go the "purifier" route?

input from youtube:

<iframe allowfullscreen ... ></iframe>

final output after tidy'ing:

<iframe allowfullscreen="" ...></iframe>

PHP Tidy:

$tidy                   =  new \tidy();
$config             =  array(
    'show-body-only'   => true,
    'char-encoding'    => 'utf8'
);
$output = $tidy -> repairString($data['html'], $config, 'UTF8');

Answer 1

我不知道任何定义allowfullscreen属性的 XHTML 规范，这可以解释为什么 tidy 不将其识别为布尔属性。

如果它是一个布尔属性，那么true它就不是一个有效的值。名称和值将是相同的字符串。