WordPress 实现评论白名单功能（昵称、邮箱及网址可完全匹配）

/**
* WordPress 实现评论白名单功能 - 龙笑天下
* https://www.ilxtx.com/wordpress-comment-whitelist.html
* 描述：评论白名单内的邮箱地址无需审核直接通过
*/
define('ALLOW_EMAILS', '3524@qq.com,651@qq.com,4527@qq.com');
function lxtx_boke112_approved_comment($approved,$commentdata){
    $email = $commentdata['comment_author_email'];
    $approv_emails = ALLOW_EMAILS ? explode(',', ALLOW_EMAILS) : array();
    if (!$approved) {
        if (in_array($email,$approv_emails)) {
            $approved = 1;
        }
    }
    return $approved;
}
add_action('pre_comment_approved', 'lxtx_boke112_approved_comment', 10, 2);