WordPress.DB.RestrictedFunctions.mysql_mysqli_select_db
mysql mysqli select db
The plugin uses a raw MySQL extension or class instead of WordPress database APIs.
Why It Shows Up
The scan found `mysql_*`, `mysqli_*`, PDO MySQL, or related database functions in plugin code.
Why It Matters
Bypassing `$wpdb` can ignore WordPress database configuration, escaping conventions, character sets, and compatibility layers.
How to Fix
- Replace raw MySQL calls with `$wpdb` methods or higher-level WordPress APIs.
- Use `$wpdb->prepare()` for dynamic values.
- If a third-party library requires a database connection, isolate it and document why WordPress APIs cannot be used.
References
Affected Plugins
| Rank | Plugin | Score | Errors | Warnings | Installs | Updated | Top Issue |
|---|---|---|---|---|---|---|---|
| #1 | Duplicator – Backups & Migration Plugin – Cloud Backups, Scheduled Backups, & More | 21 | 2,572 | 1,277 | 1m+ | Output Not Escaped | |
| #2 | wpDataTables – WordPress Data Table, Dynamic Tables & Table Charts Plugin | 21 | 1,354 | 1,140 | 70k+ | Output Not Escaped | |
| #3 | Softaculous | 23 | 116 | 49 | 10k+ | file system operations fread | |
| #4 | Backuply – Backup, Restore, Migrate and Clone | 24 | 704 | 551 | 700k+ | Non Prefixed Variable Found |
