WordPress Plugin Development (Core)

Last Updated: 2026-01-21 Latest Versions: WordPress 6.9+ (Dec 2, 2025), PHP 8.0+ recommended, PHP 8.5 compatible Dependencies: None (WordPress 5.9+, PHP 7.4+ minimum)

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Architecture Patterns: Simple (functions only, <5 functions) | OOP (medium plugins) | PSR-4 (modern/large, recommended 2025+)