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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.
Learn how to use Composer's autoload-dev feature to separate production logic from test suites, reducing memory overhead and preventing development code from leaking into production.
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