/* ===== SEO 基础设施:canonical + meta description + Organization Schema ===== */ add_action('wp_head', function () { global $wp; $url = home_url($wp->request); $title = wp_get_document_title(); $desc = ''; if (is_front_page()) { $desc = get_bloginfo('description') ?: get_bloginfo('name') . ' - ' . get_bloginfo('description'); } elseif (is_singular()) { $desc = get_the_excerpt(); } elseif (is_archive()) { $desc = get_the_archive_description(); } if (is_singular()) { $pid = get_queried_object_id(); $custom = get_post_meta($pid, '_leijex_page_lead', true); if ($custom) $desc = $custom; $yoast = get_post_meta($pid, '_yoast_wpseo_metadesc', true); $aio = get_post_meta($pid, '_aioseo_description', true); if ($aio) $desc = $aio; if ($yoast) $desc = $yoast; } /* canonical */ $canon = $url; if (is_singular()) { $canon = get_permalink(); } echo '' . "\n"; /* meta description fallback */ if ($desc && strpos($html_buffer ?? '', 'name="description"') === false) { echo '' . "\n"; } /* Organization + WebSite Schema(仅首页) */ if (is_front_page()) { $org = array( '@context' => 'https://schema.org', '@type' => 'Organization', 'name' => get_bloginfo('name'), 'url' => home_url('/'), ); $logo = get_theme_mod('custom_logo'); if ($logo) { $logo_data = wp_get_attachment_image_src($logo, 'full'); if ($logo_data) $org['logo'] = $logo_data[0]; } echo '' . "\n"; $web = array( '@context' => 'https://schema.org', '@type' => 'WebSite', 'name' => get_bloginfo('name'), 'url' => home_url('/'), ); echo '' . "\n"; } /* BreadcrumbList Schema(非首页) */ if (!is_front_page() && function_exists('leijex_breadcrumb')) { // 简化 BreadcrumbList $items = array(); $items[] = array('@type' => 'ListItem', 'position' => 1, 'name' => 'Home', 'item' => home_url('/')); if (is_singular('product')) { $items[] = array('@type' => 'ListItem', 'position' => 2, 'name' => 'Products', 'item' => home_url('/products/')); $items[] = array('@type' => 'ListItem', 'position' => 3, 'name' => get_the_title()); } elseif (!is_front_page()) { $items[] = array('@type' => 'ListItem', 'position' => 2, 'name' => get_the_title()); } if (count($items) > 1) { $bl = array('@context' => 'https://schema.org', '@type' => 'BreadcrumbList', 'itemListElement' => $items); echo '' . "\n"; } } }, 2);
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