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Learn how to configure Composer’s PSR‑4 autoloading for instant class availability in dev and optimized class‑map lookups in prod, with verification steps and failure‑mode guidance.
Learn how to configure Composer's PSR-4 autoloader, verify it works with a test class, and avoid frequent mistakes like missing dump-autoload or case mismatches.
Stop fighting 'Class not found' errors. Learn when to use PSR-4 for dynamic development and when to leverage Classmaps for production performance in PHP.
composer
php