vendor/autoload.php – exercise: Goodbye, homemade autoloader

Goodbye, homemade autoloader

Exercise 3 of 4 in chapter 4 · 100 XP · 3 objectives checked by tests

Topics covered: vendor/autoload.phpComposer Autoload

Composer now knows how to load the gazette's classes. Your autoloader served you well: it can retire.

Your mission

In public/index.php, replace the call to spl_autoload_register() with a single line that loads Composer's autoloader: require __DIR__ . '/../vendor/autoload.php';.
Check that the front page still shows, weather report included.

Reminder

vendor/autoload.php is the only file a Composer project loads by hand. It registers the autoloader for your classes (the PSR-4 rule) and the one for every dependency installed in vendor/. That's how, in the next chapter, a downloaded router will become usable in a single line.

The rest of chapter 4: Composer takes over

Reading a composer.json Exercise 1 · Composer, composer.json, JSON, Dependency

Declaring PSR-4 Exercise 2 · PSR-4, Composer, Autoload, composer dump-autoload

Subfolders Exercise 4 · Namespaces, use, PSR-4, Composer, composer dump-autoload -o