Don’t save comments containing a URL

Moved to Fixing WordPress, this is not an Developing with WordPress topic.

Have you tried any of these solutions?

https://www.ads-software.com/support/article/comment-spam/

A link alone isn’t enough to make it obvious that it’s a spam bot though yes, when you examine it it is obvious to a real person. Akismet and other spam plugins can make that determination by comparing the comment “score” to other comments left on other WordPress installations.

I saw it as a developing with WordPress topic because back-end code will be needed to prevent this.

A link alone isn’t enough to make it obvious that it’s a spam bot

On my Theme it is. I have removed the URL field. So when a user posts a name, email, comment and URL to my website… I KNOW that it is spam. THERE IS NO URL FIELD ON MY SITE so how could they have posted a URL through the form? The answer is they couldn’t. It’s spam and I’d like to hook into wherever comments are saved in functions.php and prevent the comment from being saved.

Have you tried any of these solutions?

Sure, I can moderate away the spam comments just fine. But, after a certain point of reading spam comments a man might ask, “Wait, why don’t I just write a line of code so I never have to do this again?”

I surmise there is a better way than just dealing with it.

I figured out how to do what I was looking for. This hook should work.

function preprocess_comment_remove_url( $commentdata ) {
    // If the user submitted the URL disallow comment..
    if (!IsNullOrEmptyString($commentdata['comment_author_url'])) {
        wp_die('Please stop spamming us!  Thanks!');
    }
    return $commentdata;
}
add_filter( 'preprocess_comment' , 'preprocess_comment_remove_url' );