Reject any comment contain URLs, disable comment field URL

functions.php

<?php
// Sử dụng: paste đoạn code vào trong file theme functions.php
// Không cần nếu bạn đã tắt comment trên web

function codetot_prevent_urls_in_comment_content( $commentdata ) {
    $comment_content = $commentdata['comment_content'];
    $url_pattern = '/https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)/i';

    if ( preg_match( $url_pattern, $comment_content ) ) {
        wp_die(
            __( '<strong>ERROR</strong>: Your comment contains a URL. Please remove it before submitting.', 'your-text-domain' ),
            __( 'Comment Submission Error', 'codetot' ),
            array(
                'response' => 200,
                'back_link' => true
            )
        );
    }

    return $commentdata;
}
add_filter( 'preprocess_comment', 'codetot_prevent_urls_in_comment_content' );

function codetot_remove_comment_website_field( $fields ) {
    if ( isset( $fields['url'] ) ) {
        unset( $fields['url'] );
    }
    return $fields;
}
add_filter( 'comment_form_default_fields', 'codetot_remove_comment_website_field' );