Getting Started: Common WordPress Debugging Basics Vol1
- Why debugging is essential in WordPress development
- Setting up WP_DEBUG, WP_DEBUG_LOG, WP_DEBUG_DISPLAY
- Understanding the difference between PHP errors, WordPress notices, and warnings
- How to reproduce issues reliably
- Debugging Workflow: From Reproduction to Resolution
- Establishing a reproducible test environment (local, staging, production)
- Creating a minimal, isolated test case to isolate the bug
- Implementing a structured debugging checklist
- Version control practices for debugging (branching, commit messages)
- PHP and WP Core: Diagnosing Core and Theme/Plugin Conflicts
- Reading PHP error logs vs. WordPress debug log
- Identifying plugin conflicts: disabling plugins methodically
- Theme vs. plugin issues: switching themes to isolate the cause
- Using query monitor and debugging plugins effectively
- Debugging Performance Issues: Slow Loads and Timeouts
- Distinguishing front-end vs. back-end performance problems
- Measuring with Query Monitor, Debug Bar, and Server logs
- Debugging database queries and transients
- Caching layers: ensuring debug views reflect real changes
- Security-Focused Debugging: Safe Debugging Practices
- Avoiding sensitive data exposure in logs
- Debugging on production vs. staging with caution
- Stripping debug information from error messages for users
- Front-End Debugging: JavaScript, CSS, and Asset Issues
- Debugging AJAX requests in WordPress
- Enqueuing scripts and styles correctly to avoid conflicts
- Console errors, REST API responses, and nonce validation
- Database and Data Integrity: Diagnosing Data-Related Bugs
- Understanding WP_options and transients pitfalls
- Serialized data issues and PHP version compatibility
- Data migrations and plugin compatibility checks
- Error Handling Strategies: Logs, Monitoring, and Alerts
- Setting up centralized logging (server logs, WP_DEBUG_LOG, custom log handlers)
- Integrating with monitoring tools (New Relic, Sentry, Uptime Robot)
- Establishing alert thresholds and incident response playbooks
- Testing and Quality Assurance: Automating Debuggable Workflows
- Unit testing with PHPUnit for WordPress
- Writing integration tests for themes/plugins
- Automated UI tests and end-to-end testing considerations
- Using continuous integration for debugging feedback
- Real-World Case Studies: Lessons from WordPress Debugging
- Case studies of common bugs and their resolutions
- What went wrong, how it was diagnosed, and how to prevent recurrence
- Best practices learned from past debugging experiences
- Debugging in Multisite Environments
- Challenges with network-wide plugins and per-site configurations
- Debugging network admin vs. subsites
- Managing logs across a multisite setup
- Tools Spotlight: Hands-on Demos
- WP_DEBUG and error_log demonstrations
- Using Query Monitor, Debug Bar, and Health Check plugins
- Manual debugging techniques (echo/var_dump) vs. non-invasive methods
- Debugging REST API endpoints in WordPress
- Debunking Common Myths and Pitfalls
- “If it’s not showing, it isn’t a bug” — why hidden errors matter
- Over-reliance on display_errors in production
- Misinterpreting notices as fatal errors
- Accessibility and Debugging: Ensuring Assistive Tech Compatibility
- Debugging frontend issues that affect accessibility
- Validating ARIA attributes and semantic HTML
- Post-Mortem and Prevention: Turning Debugging into Sustainability