wp_abuseipdb

<?php

// Create a custom admin menu for blacklist
add_action('admin_menu', 'blacklist_menu');

function blacklist_menu() {
    add_menu_page('Blacklist', 'Blacklist', 'manage_options', 'blacklist', 'blacklist_menu_page', 'dashicons-shield', 6);
}

// Create a page to show all blacklisted IPs
function blacklist_menu_page() {
    echo '<h1>Blacklisted IPs</h1>';
    echo '<p>Here are all the IPs that have been blacklisted:</p>';
    // Get all blacklisted IPs from database
    global $wpdb;
    $blacklist_ips = $wpdb->get_results("SELECT * FROM {$wpdb->prefix}blacklist_ips");
    // Display all blacklisted IPs
    if ($blacklist_ips) {
        echo '<ul>';
        foreach ($blacklist_ips as $ip) {
            echo '<li>' . $ip->ip_address . '</li>';
        }
        echo '</ul>';
    } else {
        echo '<p>No IPs have been blacklisted yet.</p>';
    }
}

// Check if user's IP is blacklisted
add_action('init', 'check_ip_blacklist');

function check_ip_blacklist() {
    // Get user's IP
    $user_ip = $_SERVER['REMOTE_ADDR'];
    // Sanitize user's IP
    $user_ip = sanitize_text_field($user_ip);
    // Check if user's IP is blacklisted
    global $wpdb;
    $blacklist_ip = $wpdb->get_row("SELECT * FROM {$wpdb->prefix}blacklist_ips WHERE ip_address = '$user_ip'");
    // If user's IP is blacklisted, ban the user
    if ($blacklist_ip) {
        wp_die('You have been banned from this website.');
    }
}

// Check if user's IP is blacklisted on AbuseIPDB
add_action('init', 'check_ip_abuseipdb');

function check_ip_abuseipdb() {
    // Get user's IP
    $user_ip = $_SERVER['REMOTE_ADDR'];
    // Sanitize user's IP
    $user_ip = sanitize_text_field($user_ip);
    // Get AbuseIPDB API key
    $api_key = get_option('abuseipdb_api_key');
    // Check if user's IP is blacklisted on AbuseIPDB
    $url = 'https://api.abuseipdb.com/api/v2/check?ipAddress=' . $user_ip . '&maxAgeInDays=90&verbose';
    $args = array(
        'headers' => array(
            'Key' => $api_key,
            'Accept' => 'application/json'
        )
    );
    $response = wp_remote_get($url, $args);
    $data = json_decode($response['body'], true);
    // If user's IP is blacklisted, add it to the blacklist
    if ($data