When writing a project in PHP, instead of writing all your code from scratch, for some things you’ll probably want to use an existing third-party library, or package. No point in reinventing the wheel. So in addition to your own code, you might add some code libraries.
To use a code library, first you have to find it, download it, and include it in your project.
Composer is a tool that will automate all of this for you. This video shows the basics of how you can use Composer to install PHP packages automatically.
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