How to disable HTML in WordPress comments

By default, WordPress allows certain HTML tags to be included in comments, such as etc. If you find a lot of spam, these tags are included. Most spam comments are sent by bots and scripts that use HTML tags. If you just disable HTML in WordPress comments, you can prevent a lot of spam. In this tutorial, we will show you how to disable HTML tags in WordPress comments.

This tutorial will disable only the active HTML tags. So someone can still post something like this:

It will show up, but the tags won't work. So if someone uses strong markup it won't bold the text. Also, not many spam bots have time to do this, as this method takes up a lot of time and does not benefit them.

All you have to do is open your functions.php and add the following code:

    // This will occur when the comment is posted functionplc_comment_post( $incoming_comment) { // convert everything in a comment to display literally $incoming_comment['comment_content'] = htmlspecialchars($incoming_comment['comment_content']); // the one exception is single quotes, which cannot be #039; because WordPress marks it as spam $incoming_comment['comment_content'] = str_replace( "'", ''', $incoming_comment['comment_content'] ); return( $incoming_comment); } // This will occur before a comment is displayed functionplc_comment_display( $comment_to_display) { // Put the single quotes back in $comment_to_display= str_replace( ''', "'", $comment_to_display); return$comment_to_display;}

Depend on

Use it with one click in WordPress

If you don't want to add this code manually yourself, the original author also provides a plugin that you can download. Just install and activate Peter's text comment plugin.

This method is better because it doesn't require you to change the core files. If you want to edit the core file, then you can go to wp-includes/kses.php and edit the code there. (This is not recommended, but here is for knowledge. (WP Codex for more details)

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