PHP - remove leading and trailing spaces in HTML

php-html-remove-leading-trailing-space.php

final class Html
{
    static public function removeComments($content = '')
    {
        return preg_replace('/<!--(.|\s)*?-->/', '', $content);
    }

    static public function sanitize($content)
    {
        $search = array(
            // strip whitespaces after tags, except space
            '/\>[^\S ]+/s',
            // strip whitespaces before tags, except space
            '/[^\S ]+\</s',
            // shorten multiple whitespace sequences
            '/(\s)+/s'
        );

        $replace = array(
            '>',
            '<',
            '\\1'
        );

        $content = preg_replace($search, $replace, $content);
        return static::removeComments($content);
    }
}