WOW - The Maintenance contains a few snippets to help you easy to stay with a website

codetot-maintenance.php

<?php
/**
 * Maintenance Hooks for WordPress
 * @author CODE TOT <khoi@codetot.com>
 * @link https://baotriweb.codetot.vn
 **/

// Reject comments containing URLs in the comment text or website field
function codetot_maintenance_reject_comments_with_urls($commentdata) {
    // Check the comment content for URLs
    if (preg_match('/https?:\/\/|www\./i', $commentdata['comment_content'])) {
        wp_die('Comments containing URLs are not allowed.');
    }

    // Check the website field for URLs
    if (!empty($commentdata['comment_author_url']) && preg_match('/https?:\/\/|www\./i', $commentdata['comment_author_url'])) {
        wp_die('Website URLs are not allowed in comments.');
    }

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

// Prevent empty Gravity Form submissions
function codetot_maintenance_prevent_gravity_form_blank_entry( $validation_result ) {
    $form = $validation_result['form'];
    $is_empty = true;

    // Loop through submitted fields
    foreach ( $form['fields'] as $field ) {
        $field_id = $field->id;
        $value = rgpost( "input_{$field_id}" );

        // If any field has a non-empty value, mark as not empty
        if ( !empty( $value ) ) {
            $is_empty = false;
            break;
        }
    }

    // If all fields are empty, fail validation
    if ( $is_empty ) {
        $validation_result['is_valid'] = false;

        // Add a general form error message
        $form['validation_message'] = 'You must fill out at least one field before submitting.';
        $validation_result['form'] = $form;
    }

    return $validation_result;
}
add_filter( 'gform_validation', 'codetot_maintenance_prevent_gravity_form_blank_entry');

function codetot_maintenance_remove_tracking_parameters_globally()
{
    $current_url = wp_parse_url(home_url($_SERVER['REQUEST_URI']));
    $exclude_parameters = [
        'fbclid',
        'gclid',
        'srsltid',
    ];

    if (isset($current_url['query'])) {
        $query_params = wp_parse_args($current_url['query']);
        $modified = false;
        $new_query_params = array();

        foreach ($query_params as $key => $value) {
            if (! in_array($key, $exclude_parameters)) {
                $new_query_params[$key] = $value;
            } else {
                $modified = true;
            }
        }

        if ($modified) {
            $new_url = $current_url['scheme'] . '://' . $current_url['host'] . $current_url['path'];
            if (! empty($new_query_params)) {
                $new_url = add_query_arg($new_query_params, $new_url);
            }
            wp_safe_redirect($new_url, 301);
            exit;
        }
    }
}
add_action('init', 'codetot_maintenance_remove_tracking_parameters_globally');