很多资源网站有很多用户为了下载资源会随意评论，有的人会回复一两个字来敷衍一下，要想用户多评论几个字，就需要控制评论最少字数，那么如何控制WordPress文章评论最少字数及最多字数？
实现起来也挺简单的把下面的代码添加的WordPress主题的function.php文件中即可。
add_filter( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’preprocess_comment\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’minimal_comment_length\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ );
function minimal_comment_length( $commentdata ) {
$minimalCommentLength = 40;
if ( strlen( trim( $commentdata[\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’comment_content\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’] ) ) < $minimalCommentLength )
{
wp_die( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’抱歉，您的评论太短了，请至少输入 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ . $minimalCommentLength . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ 个字！\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ );
}
return $commentdata;
}
/*
* WordPress控制文章评论最少字数
*/
function lxtx_set_comments_length($commentdata) {
$minCommentlength = 100; //最少字數限制，建议设置为5-10个字
$maxCommentlength = 2200; //最多字數限制，建议设置为150-200个字
$pointCommentlength = mb_strlen($commentdata[\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’comment_content\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’],\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’UTF8\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’); //mb_strlen 一个中文字符当做一个长度
if ( ($pointCommentlength < $minCommentlength) && !is_user_logged_in() ){
err(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’抱歉！您说的内容太少了，请给我讲个\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ . $minCommentlength .\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’个字的笑话（目前字数：\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’. $pointCommentlength .\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’）【登录后无此限制】\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’);
exit;
}
if ( ($pointCommentlength > $maxCommentlength) && !is_user_logged_in() ){
err(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’对不起，你的文采太好了，你的笑话太长了，我只要\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ . $maxCommentlength .\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’个字的笑话！（目前字数：\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’. $pointCommentlength .\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’）【登录后无此限制】\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’);
exit;
}
return $commentdata;
}
add_filter(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’preprocess_comment\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’lxtx_set_comments_length\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’);
