WordPress评论禁止针对指定内容全英文的方法

<?php
function scp_comment_post( $incoming_comment ) {
$pattern = '/[一-?]/u';
// 禁止全英文评论
if(!preg_match($pattern, $incoming_comment['comment_content'])) {
wp_die( "You should type some Chinese word (like "你好") in your comment to pass the spam-check, thanks for your patience! 您的评论中必须包含汉字!" );
}
return( $incoming_comment );
}
?>

function lianyue_comment_post( $incoming_comment ) {
$http = '/[href="|rel="nofollow"|http://|</a>]/u';
if(preg_match($http, $incoming_comment['comment_content'])) {
wp_die( "万恶的发贴机!" );
}
return( $incoming_comment );
}
add_filter('preprocess_comment', 'lianyue_comment_post');