Advanced CEO

The Advanced SEO Toolkit is a comprehensive WordPress plugin designed to enhance your website’s search engine optimization (SEO) and social media visibility. It empowers users to take full control of their site’s metadata, structured data, and technical SEO elements without relying on third-party plugins. Here’s what it does:
advanced-SEO.php PHP • 8.17 KB
/*
Plugin Name: Advanced SEO Toolkit
Plugin URI: https://yourwebsite.com/
Description: Adds advanced SEO features including meta tags, Open Graph, and schema markup
Version: 1.0
Author: Your Name
Author URI: https://yourwebsite.com/
License: GPL2
*/

// Add SEO Meta Box to Posts and Pages
function aseotoolkit_add_meta_box() {
    $post_types = ['post', 'page'];
    foreach ($post_types as $post_type) {
        add_meta_box(
            'aseotoolkit_meta_box',
            'SEO Settings',
            'aseotoolkit_meta_box_callback',
            $post_type,
            'normal',
            'high'
        );
    }
}
add_action('add_meta_boxes', 'aseotoolkit_add_meta_box');

// Meta Box Callback
function aseotoolkit_meta_box_callback($post) {
    wp_nonce_field('aseotoolkit_save_meta', 'aseotoolkit_nonce');
    
    $meta_title = get_post_meta($post->ID, '_aseotoolkit_meta_title', true);
    $meta_description = get_post_meta($post->ID, '_aseotoolkit_meta_description', true);
    $meta_keywords = get_post_meta($post->ID, '_aseotoolkit_meta_keywords', true);
    $og_image = get_post_meta($post->ID, '_aseotoolkit_og_image', true);
    
    echo '<p><label for="aseotoolkit_meta_title">Meta Title:</label>';
    echo '<input type="text" id="aseotoolkit_meta_title" name="aseotoolkit_meta_title" value="'.esc_attr($meta_title).'" style="width:100%" /></p>';
    
    echo '<p><label for="aseotoolkit_meta_description">Meta Description:</label>';
    echo '<textarea id="aseotoolkit_meta_description" name="aseotoolkit_meta_description" style="width:100%;height:100px">'.esc_textarea($meta_description).'</textarea></p>';
    
    echo '<p><label for="aseotoolkit_meta_keywords">Meta Keywords (comma-separated):</label>';
    echo '<input type="text" id="aseotoolkit_meta_keywords" name="aseotoolkit_meta_keywords" value="'.esc_attr($meta_keywords).'" style="width:100%" /></p>';
    
    echo '<p><label for="aseotoolkit_og_image">Open Graph Image URL:</label>';
    echo '<input type="text" id="aseotoolkit_og_image" name="aseotoolkit_og_image" value="'.esc_attr($og_image).'" style="width:100%" /></p>';
}

// Save Meta Data
function aseotoolkit_save_meta($post_id) {
    if (!isset($_POST['aseotoolkit_nonce']) || !wp_verify_nonce($_POST['aseotoolkit_nonce'], 'aseotoolkit_save_meta')) {
        return;
    }
    
    $fields = [
        'aseotoolkit_meta_title',
        'aseotoolkit_meta_description',
        'aseotoolkit_meta_keywords',
        'aseotoolkit_og_image'
    ];
    
    foreach ($fields as $field) {
        if (isset($_POST[$field])) {
            update_post_meta($post_id, '_'.$field, sanitize_text_field($_POST[$field]));
        }
    }
}
add_action('save_post', 'aseotoolkit_save_meta');

// Output SEO Meta Tags
function aseotoolkit_output_meta_tags() {
    if (is_singular()) {
        global $post;
        $meta_title = get_post_meta($post->ID, '_aseotoolkit_meta_title', true);
        $meta_description = get_post_meta($post->ID, '_aseotoolkit_meta_description', true);
        $meta_keywords = get_post_meta($post->ID, '_aseotoolkit_meta_keywords', true);
        $og_image = get_post_meta($post->ID, '_aseotoolkit_og_image', true);
    }
    
    // Default values
    $site_name = get_bloginfo('name');
    $site_description = get_bloginfo('description');
    
    // Meta Title
    echo '<title>'.($meta_title ? esc_html($meta_title) : wp_title('', false)).'</title>'."\n";
    
    // Meta Description
    echo '<meta name="description" content="'.esc_attr($meta_description ? $meta_description : $site_description).'" />'."\n";
    
    // Meta Keywords
    if ($meta_keywords) {
        echo '<meta name="keywords" content="'.esc_attr($meta_keywords).'" />'."\n";
    }
    
    // Open Graph Tags
    echo '<meta property="og:title" content="'.esc_attr($meta_title ? $meta_title : get_the_title()).'" />'."\n";
    echo '<meta property="og:description" content="'.esc_attr($meta_description ? $meta_description : $site_description).'" />'."\n";
    echo '<meta property="og:type" content="article" />'."\n";
    echo '<meta property="og:url" content="'.esc_url(get_permalink()).'" />'."\n";
    echo '<meta property="og:site_name" content="'.esc_attr($site_name).'" />'."\n";
    if ($og_image) {
        echo '<meta property="og:image" content="'.esc_url($og_image).'" />'."\n";
    }
    
    // Basic Schema Markup
    echo '<script type="application/ld+json">';
    $schema = [
        '@context' => 'https://schema.org',
        '@type' => 'WebSite',
        'name' => $site_name,
        'url' => get_site_url(),
        'potentialAction' => [
            '@type' => 'SearchAction',
            'target' => get_site_url().'/?s={search_term_string}',
            'query-input' => 'required name=search_term_string'
        ]
    ];
    echo json_encode($schema);
    echo '</script>';
}
add_action('wp_head', 'aseotoolkit_output_meta_tags');

// Add Settings Page
function aseotoolkit_add_settings_page() {
    add_options_page(
        'SEO Settings',
        'SEO Settings',
        'manage_options',
        'aseotoolkit-settings',
        'aseotoolkit_render_settings_page'
    );
}
add_action('admin_menu', 'aseotoolkit_add_settings_page');

// Render Settings Page
function aseotoolkit_render_settings_page() {
    ?>
    <div class="wrap">
        <h1>Advanced SEO Settings</h1>
        <form method="post" action="options.php">
            settings_fields('aseotoolkit_settings');
            do_settings_sections('aseotoolkit-settings');
            submit_button();
            ?>
        </form>
    </div>
    }

// Register Settings
function aseotoolkit_register_settings() {
    register_setting('aseotoolkit_settings', 'aseotoolkit_default_meta');
    register_setting('aseotoolkit_settings', 'aseotoolkit_social_profiles');
    register_setting('aseotoolkit_settings', 'aseotoolkit_schema_settings');
    
    add_settings_section(
        'aseotoolkit_defaults_section',
        'Default Meta Settings',
        null,
        'aseotoolkit-settings'
    );
    
    add_settings_field(
        'aseotoolkit_default_meta_title',
        'Default Meta Title',
        'aseotoolkit_text_field_callback',
        'aseotoolkit-settings',
        'aseotoolkit_defaults_section',
        ['name' => 'aseotoolkit_default_meta[title]']
    );
    
    // Add more settings fields as needed
}
add_action('admin_init', 'aseotoolkit_register_settings');

function aseotoolkit_text_field_callback($args) {
    $options = get_option('aseotoolkit_default_meta');
    echo '<input type="text" name="'.esc_attr($args['name']).'" value="'.esc_attr($options['title'] ?? '').'" class="regular-text">';
}

// XML Sitemap Functionality
function aseotoolkit_generate_sitemap() {
    $postsForSitemap = get_posts([
        'numberposts' => -1,
        'orderby' => 'modified',
        'post_type' => ['post', 'page'],
        'post_status' => 'publish'
    ]);

    $sitemap = 'xml version="1.0" encoding="UTF-8"?>';
    $sitemap .= '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">';

    foreach ($postsForSitemap as $post) {
        setup_postdata($post);
        $sitemap .= '<url>'.
            '<loc>'.get_permalink($post->ID).'</loc>'.
            '<lastmod>'.date('Y-m-d\TH:i:s+00:00', strtotime($post->post_modified_gmt)).'</lastmod>'.
            '<changefreq>monthly</changefreq>'.
            '</url>';
    }

    $sitemap .= '</urlset>';

    file_put_contents(ABSPATH.'sitemap.xml', $sitemap);
}
add_action('publish_post', 'aseotoolkit_generate_sitemap');
add_action('publish_page', 'aseotoolkit_generate_sitemap');

// Add rewrite rule for sitemap.xml
function aseotoolkit_add_sitemap_rewrite_rule() {
    add_rewrite_rule('^sitemap\.xml$', 'index.php?aseotoolkit_sitemap=1', 'top');
}
add_action('init', 'aseotoolkit_add_sitemap_rewrite_rule');

// Handle sitemap request
function aseotoolkit_handle_sitemap_request() {
    if (get_query_var('aseotoolkit_sitemap')) {
        header('Content-Type: application/xml');
        echo file_get_contents(ABSPATH.'sitemap.xml');
        exit;
    }
}
add_action('template_redirect', 'aseotoolkit_handle_sitemap_request');
advanced-SEO.php