Theme Security Best Practices — a practical guide to WordPress theme security with clear examples you can reuse in real projects.
WordPress Theme Development Series (70/96). Prefer one article? Read the complete WordPress theme development tutorial.
Short description
Themes are still PHP apps — treat every output and request carefully.
Security checklist
- Escape on output
- Sanitize on input
- Nonces for forms/AJAX
- Prefix functions
- No remote code loading