亲，你迷路了！ | 灵虚异幻

// AJAX 三级分类筛选 add_action('wp_ajax_filter_posts', 'my_ajax_filter_posts'); add_action('wp_ajax_nopriv_filter_posts', 'my_ajax_filter_posts'); function my_ajax_filter_posts() { $search = isset($_POST['s']) ? sanitize_text_field($_POST['s']) : ''; $categories = isset($_POST['categories']) ? (array) $_POST['categories'] : []; $tag = isset($_POST['tag']) ? intval($_POST['tag']) : 0; $paged = isset($_POST['paged']) ? max(1, intval($_POST['paged'])) : 1; $tax_query = []; if (!empty($categories)) { foreach ($categories as $cat_id) { $tax_query[] = [ 'taxonomy' => 'category', 'field' => 'term_id', 'terms' => [$cat_id], 'operator' => 'IN', ]; } } if ($tag) { $tax_query[] = [ 'taxonomy' => 'post_tag', 'field' => 'term_id', 'terms' => [$tag], 'operator' => 'IN', ]; } if (!empty($tax_query)) { $tax_query['relation'] = 'AND'; } $args = [ 'post_type' => 'post', 'post_status' => 'publish', 'ignore_sticky_posts' => 1, 's' => $search, 'tax_query' => $tax_query, 'paged' => $paged, ]; $query = new WP_Query($args); ob_start(); if ($query->have_posts()) { $total_posts = $query->found_posts; // 获取总文章数 // 添加搜索结果信息 echo '

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共为您查询到'.$total_posts.'个内容结果

'; while ($query->have_posts()) : $query->the_post(); get_template_part('template/content', get_post_format()); endwhile; // 分页 $total_pages = $query->max_num_pages; if ($total_pages > 1) { echo '

'; // 上一页按钮 if ($paged > 1) { echo ''; } // 总是显示第一页 if ($paged > 3) { echo ''; if ($paged > 4) { echo ''; } } // 计算页码范围 $start = max(1, $paged - 2); $end = min($total_pages, $paged + 2); // 显示页码 for ($i = $start; $i <= $end; $i++) { $active_class = ($i == $paged) ? 'active' : ''; echo ''; } // 总是显示最后一页 if ($paged < $total_pages - 2) { if ($paged < $total_pages - 3) { echo ''; } echo ''; } // 下一页按钮 if ($paged < $total_pages) { echo ''; } echo '

'; } } else { echo '

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没有找到符合条件的文章

'; } wp_reset_postdata(); wp_send_json_success(['html' => ob_get_clean()]); } /** * 自定义分页函数，与AJAX分页保持一致 * * @param int $total_pages 总页数 * @param int $paged 当前页码 */ function custom_pagination($total_pages, $paged = 1) { if ($total_pages <= 1) { return; } echo '

'; } /** * 获取字符串的拼音首字母 * 使用外部映射表文件（/inc/pinyin-map.php） */ function get_first_pinyin_letter($str) { static $pinyinMap = null; // 延迟加载映射表（只在第一次调用时加载） if ($pinyinMap === null) { $pinyinMap = include get_theme_file_path('/inc/pinyin-map.php'); } // 英文字母 if (preg_match('/^[a-zA-Z]/', $str)) { return strtoupper(substr($str, 0, 1)); } // 数字 if (preg_match('/^[0-9]/', $str)) { return '#'; } // 中文（从映射表中查找） if (preg_match('/^[\x{4e00}-\x{9fa5}]/u', $str)) { $char = mb_substr($str, 0, 1, 'UTF-8'); return $pinyinMap[$char] ?? '~'; // 找不到的字符归到 ~ } // 其他字符 return '~'; } 亲，你迷路了！ | 灵虚异幻
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