This article explains how Laravel’s convenient architecture can hide PHP’s file‑loading requirements, demonstrates the fatal error caused by missing requires, and shows how Composer’s PSR‑4 autoloading automatically resolves class loading through proper configuration and the vendor/autoload.php entry point.
Learn step-by-step how to create a PHP Composer package, configure its composer.json, implement code with PSR‑4 autoloading, write PHPUnit tests, manage Git commits, publish to Packagist, and install the package via Composer, complete with practical commands and examples.
This guide walks you through preparing a GitHub and Packagist account, creating a repository, initializing a Composer package (both automatically and manually), configuring PSR‑4 autoload, writing source code, and finally publishing the package by pushing to GitHub and submitting it to Packagist.
This article explains how Composer, the PHP dependency manager, supports four autoloading mechanisms—PSR‑0, PSR‑4, class‑map, and files—detailing their differences, configuration in composer.json, and practical code examples for loading classes.
