Nettressurser:

• WordPress Codex
• Developer-Wordpress-org
• WP Coding Standards
• WP Code Reference
• Plugin Handbook

WP-Development Plugins:

• Developer
• WP-Developer-tools
• Query Monitor
• Debug Bar
• More Tools

Enable debug mode:

Fil wp-config.php linje 82, set WP_Debug til true.

Hvis du vil ha debug info i egen fil, i linge 85, sett WP_DEBUG_LOG til true.