//???????? 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;
}
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