//???????? textarea ?????????????????contact form7?
add_filter('wpcf7_validate_textarea', 'wpcf7_validation_textarea_hiragana', 10, 2);
add_filter('wpcf7_validate_textarea*', 'wpcf7_validation_textarea_hiragana', 10, 2);

function wpcf7_validation_textarea_hiragana($result, $tag)
{
    $name = $tag['name'];
    $value = (isset($_POST[$name])) ? (string) $_POST[$name] : '';

    if ($value !== '' && !preg_match('/[?-?]/u', $value)) {
        $result['valid'] = false;
        $result['reason'] = array($name => '??? / ?????????????');
    }

    return $result;
}<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/users/0/bellbet/web/veronica/wp-content/themes/MediaThemeRes/functions.php:228) in <b>/home/users/0/bellbet/web/veronica/wp-includes/feed-rss2-comments.php</b> on line <b>8</b><br />
<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	
	xmlns:georss="http://www.georss.org/georss"
	xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
	
	>
<channel>
	<title>
	Model40Top へのコメント	</title>
	<atom:link href="https://www.veronica.cc/?feed=rss2&#038;p=977" rel="self" type="application/rss+xml" />
	<link>https://www.veronica.cc/?p=977</link>
	<description>Tools for the Good Life</description>
	<lastBuildDate>Tue, 29 Sep 2015 10:00:41 +0000</lastBuildDate>
	<sy:updatePeriod>
	hourly	</sy:updatePeriod>
	<sy:updateFrequency>
	1	</sy:updateFrequency>
	<generator>https://wordpress.org/?v=5.3.17</generator>
</channel>
</rss>