PHP Composer is where to automatically install, it's amazing

I can install a symfony laravel with composer directly under Linux, it feels really amazing.
He can download it automatically and then output a hint.

My question is where is composer from and then downloaded automatically, feeling like it's from the Git library?
Is that the way it is?

Reply content:

I can install a symfony laravel with composer directly under Linux, it feels really amazing.
He can download it automatically and then output a hint.

My question is where is composer from and then downloaded automatically, feeling like it's from the Git library?
Is that the way it is?

Don't be misled by the answer to @. Composer is not like Pip and NPM, its search is in packagist.org Yes, but the package download does still go to GitHub, because the author needs to enter the GitHub address when submitting the package, and packlist will not catch it himself.

https://packagist.org/

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