wordpress无需插件实现拦截无中文留言的方法

阳光漫步 發表於 2023-12-14 00:00:00

wordpress无需插件实现拦截无中文留言的方法

Some Chinese Please插件可以拦截不带中文字的留言，本博客一直在用效果不错，不写入数据库，可有效地减少spam对服务器的无谓使用，其实可以将插件简化一下，直接用代码实现。 将下面代码加到主题functions模板文件中，效果与使用插件相同。 <div style='margin: 8px 0px 1.1em; padding: 0px 0px 5px; outline: none; line-height: normal; border: 1px solid rgb(165, 165, 248); background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-family: "Courier New", monospace; overflow: hidden; width: 686px; word-break: break-all;'>
<div style="margin: 0px; padding: 5px 5px 5px 10px; outline: none; line-height: 21.6px; font-weight: bold; background: rgb(244, 245, 255); border-bottom: 1px solid rgb(242, 251, 246); height: 15px;">
PHP Code复制内容到剪贴板
</div>
<div id="code_1776" style="margin: 0px; padding: 0px; outline: none; line-height: 21.6px;">
<ol style="margin: 0px 1px 0px 45px; padding: 2px 0px; outline: none; list-style-position: initial; list-style-image: initial; line-height: 25px; word-break: break-word; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-left: 1px solid rgb(221, 221, 221); color: rgb(92, 92, 92);">
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
/* refused spam */ 
</li>
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
function refused_spam_comments( $comment_data ) { 
</li>
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
$pattern = '/[一-龥]/u'; 
</li>
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
if(!preg_match($pattern,$comment_data['comment_content'])) { 
</li>
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
wp_die('评论必须含中文！'); 
</li>
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
} 
</li>
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
return( $comment_data ); 
</li>
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
} 
</li>
<li style="margin: 0px; padding: 0px 0px 0px 5px; outline: none; list-style: decimal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(170, 0, 0);">
add_filter('preprocess_comment','refused_spam_comments'); 
</li>
</ol>
</div>
</div>

<img title="wordpress无需插件实现拦截无中文留言的方法" alt="wordpress无需插件实现拦截无中文留言的方法" src="https://zhuji.jb51.net/uploads/img/202305/589d13b326359b4cb7aae51b546151f8.jpg" style="max-width:100%!important;height:auto!important;border: 1px solid rgb(204, 204, 204); vertical-align: middle; padding: 1px; overflow: hidden; max-width: 696px; width: 441px; height: 172px;"> 
注：如果出现无效的情况，请将 wp_die 替换为 err，否则显示错误信息时，会造成模版错位，其它使用ajax评论的主题也可参照修改。 
其它一些写入数据库的防spam插件不建议使用，比如WordPress官方的防垃圾插件Akismet会在数据库中留下大量的信息，增加服务器负担。 
针对那些使用技术手段，比如GET、POST等方式不填写前台表单，直接读取后台程序文件的spam，只有屏蔽IP才能缓解疯狗一样的攻势，其它什么验证码、滑动解锁等等都没用。 
可以在.htaccess文件中添加：


<div style='margin: 3px auto 0px; padding: 0px 3px; outline: none; line-height: 21.6px; clear: both; border-width: 1px; border-style: solid; border-color: rgb(0, 153, 204); background: rgb(246, 251, 255); overflow: hidden; font-family: tahoma, arial, "Microsoft YaHei";'>
<div style="margin: 0px; padding: 0px; outline: none; float: right; line-height: 25.2px; font-size: 14px;">
复制代码
</div>
代码如下:</div>
<div id="phpcode7" style='margin: 0px auto 3px; padding: 0px 3px; outline: none; line-height: 25.2px; font-size: 14px; clear: both; border-right: 1px solid rgb(0, 153, 204); background: rgb(221, 237, 251); overflow: hidden; border-left: 1px solid rgb(0, 153, 204); word-break: break-all; border-bottom: 1px solid rgb(0, 153, 204); word-wrap: break-word; font-family: tahoma, arial, "Microsoft YaHei";'>
 
Order Deny,Allow 
Deny from xxx.xxx.xxx.xx 
Deny from xxx.xxx.xxx.xx</div>



禁止某些IP访问。 
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wordpress无需插件实现拦截无中文留言的方法