Composer practical tutorial

1. Perceptual understandingComposer

One sentence: PHP version App Store

China mirror list: https://pkg.phpcomposer.com/

2. Composer global installation and Git

Composer global installation: https://docs.phpcomposer.com/00-intro.html#Globally

Git graphic tutorial: https://segmentfault.com/a/1190000008617626

3. Create the composer.json file to build a Packagist installation package

Packagist will automatically grab the composer.json file in GitHub.

Add the project to composer.

4. Download the items in the installation package Packagist

##5. The GitHub hook automatically updates the installation package in Packagist

There is no need to click this update to synchronize the code on GitHub to Packagist.

6. Define Composer to implement automatic loading autoload

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