Composer

Composer is PHP’s dependency manager — declares libraries per project and installs them into vendor/.

Source

• getcomposer.org
• Introduction

Install (global binary)

curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

Verify: composer --version

Notes

• Requires PHP 7.2.5+ (Composer 2.2 LTS supports older PHP)
• Local install: run the installer in your project and use php composer.phar
• On macOS, create /usr/local/bin if missing: mkdir -p /usr/local/bin

Related

• Install scripts