WordPress.DB.RestrictedFunctions.mysql_mysql_num_fields
mysql mysql num fields
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 | Added | Updated | Top Issue |
|---|---|---|---|---|---|---|---|---|
| #1 | WP-WebAuthn | 22 | 957 | 396 | 2k+ | Exception output is not escaped | ||
| #2 | Clone | 23 | 244 | 262 | 40k+ | Output is not escaped | ||
| #3 | Backuply – Backup, Restore, Migrate and Clone | 24 | 709 | 555 | 600k+ | Non-prefixed global variable | ||
| #4 | Softaculous | 24 | 115 | 50 | 10k+ | file system operations fread | ||
| #5 | DB Cache Reloaded Fix | 29 | 133 | 42 | 2k+ | Output is not escaped |
