如何统计下载次数

// Function to handle downloads and count
function handle_file_download() {
    if (!isset($_GET['file_id']) || !isset($_GET['post_id'])) {
        return;
    }

    $attachment_id = intval($_GET['file_id']);
    $post_id = intval($_GET['post_id']);
    $file_url = wp_get_attachment_url($attachment_id);

    if (!$file_url) {
        wp_die('File not found');
    }
    
    // Increment download count
    $current_count = carbon_get_post_meta($post_id, 'dp_download_count') ?: 0;
    $new_count = (int)$current_count + 1;
    carbon_set_post_meta($post_id, 'dp_download_count', $new_count);

    // Redirect to actual file
    wp_redirect($file_url);
    exit;
}
add_action('init', 'handle_file_download');

下载按钮的设置

<div class="purchase-button">
                            <?php 
                            $post_id = get_the_ID();
                            $attachment_id = carbon_get_post_meta(get_the_ID(),'dp_download_file')[0]['file']; ?>
                            <a href="<?php echo home_url('?file_id=' . $attachment_id . '&post_id=' . $post_id); ?>" class="btn btn--lg btn-primary">下载</a>
                        </div>