Warning
iDB::get_error(): Couldn't fetch mysqli in iCMS://iPHP/core/DB/Mysqli.class.php on line 113

1. admincp::run() in iCMS://admincp.php on line 16
2. admincp::init() in iCMS://app/admincp/admincp.class.php on line 65
3. members::check_login() in iCMS://app/admincp/admincp.class.php on line 45
4. members::check() in iCMS://app/members/members.class.php on line 68
5. iDataBase::row() in iCMS://app/members/members.class.php on line 29
6. iDB::query() in iCMS://iPHP/core/iDB.class.php on line 253
7. iDataBase::pre_query() in iCMS://iPHP/core/DB/Mysqli.class.php on line 42
8. iDataBase::connect() in iCMS://iPHP/core/iDB.class.php on line 122
9. iDB::link() in iCMS://iPHP/core/iDB.class.php on line 65
10. iDataBase::print_error() in iCMS://iPHP/core/DB/Mysqli.class.php on line 17
11. iDB::get_error() in iCMS://iPHP/core/iDB.class.php on line 416
12. iPHP::error_handler() in iCMS://iPHP/core/DB/Mysqli.class.php on line 113

php版本7.4，5.6都试过了，不行，权限调成777也不行

数据库连接错误，检查用户名密码或数据库名是否正确