Composer

Composer is PHP's package manager.

Equivalent to:

Language	Manager
NodeJS	npm
Python	pip
Java	Maven
PHP	Composer

---

Installation

Windows:

https://getcomposer.org/

---

Check Version

composer --version

---

Initialize Project

composer init

---

Install Package

composer require monolog/monolog

---

composer.json

{
    "require": {
        "monolog/monolog": "^3.0"
    }
}

---

Install Dependencies

composer install

---

Update

composer update

---

Autoloading

{
    "autoload": {

        "psr-4": {

            "zyro\\": "src/"
        }

    }
}

---

Generate Autoload

composer dump-autoload

---

Using Composer

require
"vendor/autoload.php";

---

Why Composer Matters

Used in:

✅ Laravel

✅ Symfony

✅ APIs

✅ Discord Bots

✅ PocketMine Libraries

---

Popular Packages

• Monolog
• Guzzle
• Symfony Console
• Ramsey UUID
• ReactPHP

---

Next Chapter

➡ PHP Object Oriented Programming (OOP)