=== 系统调试信息 ===
PHP版本: 7.4.33
SITE_URL: https://www.sxkaiku.cn/
FREE_MODE: 0
UPLOAD_DIR exists: yes
UPLOAD_DIR writable: yes
DB_PATH: /www/wwwroot/sxkaiku.cn/data/app.db
DB exists: yes
POST size limit: 50M
File uploads: 1

=== 数据库表结构检查 ===
Tables: cards, sqlite_sequence, card_types, sites, settings, ip_records, orders, payments, users, user_cards, visits, daily_stats
cards columns: id, card_key, card_type, expire_days, is_permanent, price, status, source, created_at, used_at, used_ip, order_id, activated_at
sites columns: id, site_id, suffix, card_id, user_id, title, create_ip, created_at, expire_at, status

=== 测试卡密 ===
卡密存在: id=1, status=1, type=体验卡, expire_days=1, is_permanent=0
activated_at: 1784879807
used_at: 1784879807

=== GET 参数 ===
debug value: 1